Patch tracker / KB5126646

KB5126646: Windows Server 2025 Security Update (October 2026)

KB5126646 is a Critical security update for Windows Server 2025, released 2026-10-13. It closes 1041 CVEs with a maximum CVSS of 9.8. At least one of them is actively exploited (CISA KEV), so this is a deploy-first update. It is the largest of the 75 updates Microsoft shipped that month, by CVEs closed.

Update summary

CriticalCISA KEV
2026-10-13
Released
1041
CVEs fixed
9.8
Max CVSS v3
Critical
Severity
Deploy now
This update fixes vulnerabilities confirmed exploited in the wild.

Fixes 1041 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 9.8 (Critical). This update fixes an actively-exploited (CISA KEV) vulnerability.

Senserva found thisread these before you deploy broadly

Microsoft documents 1 known issue with this update.

  • Windows Server Update Services (WSUS) does not display error details

The full text, quoted from Microsoft

Microsoft Update Catalog: download KB5126646Microsoft support article
Senserva AI Opinion and rich prompt for KB5126646

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Full tracking and change history for KB5126646

Released
2026-10-13
Last changed
2026-10-13
Changes tracked
1

Senserva began recording day-to-day change history on 2026-07-07, and refreshes it several times a day. Release dates are historical where Microsoft publishes them; revision history is tracked from that date forward, so it does not include changes made before then.

Check if KB5126646 is installed

Elevated PowerShell. No output means it is not installed.

Known issues, from Microsoft

Quoted from Microsoft's support article for KB5126646 (checked 2026-10-13). Verify against the article before acting.

Windows Server Update Services (WSUS) does not display error details

After installing KB5070881 or later updates, Windows Server Update Services (WSUS) does not display synchronization error details within its error reporting. This functionality is temporarily removed to address the Remote Code Execution Vulnerability, CVE-2025-59287 .

CVEs fixed by this update

Sorted exploited-first, then by CVSS. Every CVE links to its Senserva page with the full risk facts, references, and a ready-to-paste AI prompt.

CVESeverityCVSSEPSSExploited
CVE-2026-96951High8.8-KEV
CVE-2026-100202Critical9.8-No
CVE-2026-100219Critical9.8-No
CVE-2026-100222Critical9.8-No
CVE-2026-102186Critical9.8-No
CVE-2026-102187Critical9.8-No
CVE-2026-102188Critical9.8-No
CVE-2026-102198Critical9.8-No
CVE-2026-102199Critical9.8-No
CVE-2026-102206Critical9.8-No
CVE-2026-102210Critical9.8-No
CVE-2026-102221Critical9.8-No
CVE-2026-103560Critical9.8-No
CVE-2026-103576Critical9.8-No
CVE-2026-105006Critical9.8-No
CVE-2026-105010Critical9.8-No
CVE-2026-105016Critical9.8-No
CVE-2026-108127Critical9.8-No
CVE-2026-108128Critical9.8-No
CVE-2026-108129Critical9.8-No
CVE-2026-108462Critical9.8-No
CVE-2026-108466Critical9.8-No
CVE-2026-62879Critical9.8-No
CVE-2026-69506Critical9.8-No
CVE-2026-69634Critical9.8-No
CVE-2026-69635Critical9.8-No
CVE-2026-69639Critical9.8-No
CVE-2026-69640Critical9.8-No
CVE-2026-69644Critical9.8-No
CVE-2026-69675Critical9.8-No
CVE-2026-69705Critical9.8-No
CVE-2026-69721Critical9.8-No
CVE-2026-69883Critical9.8-No
CVE-2026-69886Critical9.8-No
CVE-2026-69902Critical9.8-No
CVE-2026-69905Critical9.8-No
CVE-2026-69914Critical9.8-No
CVE-2026-69919Critical9.8-No
CVE-2026-69940Critical9.8-No
CVE-2026-69947Critical9.8-No
CVE-2026-69954Critical9.8-No
CVE-2026-69955Critical9.8-No
CVE-2026-69958Critical9.8-No
CVE-2026-69967Critical9.8-No
CVE-2026-69968Critical9.8-No
CVE-2026-69969Critical9.8-No
CVE-2026-69971Critical9.8-No
CVE-2026-69973Critical9.8-No
CVE-2026-69974Critical9.8-No
CVE-2026-69978Critical9.8-No
CVE-2026-69979Critical9.8-No
CVE-2026-69982Critical9.8-No
CVE-2026-69999Critical9.8-No
CVE-2026-70005Critical9.8-No
CVE-2026-70011Critical9.8-No
CVE-2026-70017Critical9.8-No
CVE-2026-70024Critical9.8-No
CVE-2026-70025Critical9.8-No
CVE-2026-70041Critical9.8-No
CVE-2026-70044Critical9.8-No
CVE-2026-70055Critical9.8-No
CVE-2026-70057Critical9.8-No
CVE-2026-70063Critical9.8-No
CVE-2026-70071Critical9.8-No
CVE-2026-70072Critical9.8-No
CVE-2026-70074Critical9.8-No
CVE-2026-70075Critical9.8-No
CVE-2026-70077Critical9.8-No
CVE-2026-70083Critical9.8-No
CVE-2026-70084Critical9.8-No
CVE-2026-70085Critical9.8-No
CVE-2026-70087Critical9.8-No
CVE-2026-70090Critical9.8-No
CVE-2026-70096Critical9.8-No
CVE-2026-70097Critical9.8-No
CVE-2026-70116Critical9.8-No
CVE-2026-70119Critical9.8-No
CVE-2026-70128Critical9.8-No
CVE-2026-70135Critical9.8-No
CVE-2026-70137Critical9.8-No
CVE-2026-70141Critical9.8-No
CVE-2026-70147Critical9.8-No
CVE-2026-70153Critical9.8-No
CVE-2026-70157Critical9.8-No
CVE-2026-70166Critical9.8-No
CVE-2026-70170Critical9.8-No
CVE-2026-70173Critical9.8-No
CVE-2026-70195Critical9.8-No
CVE-2026-70199Critical9.8-No
CVE-2026-70201Critical9.8-No
CVE-2026-70208Critical9.8-No
CVE-2026-70211Critical9.8-No
CVE-2026-70216Critical9.8-No
CVE-2026-70227Critical9.8-No
CVE-2026-70232Critical9.8-No
CVE-2026-70234Critical9.8-No
CVE-2026-70235Critical9.8-No
CVE-2026-70244Critical9.8-No
CVE-2026-70248Critical9.8-No
CVE-2026-70260Critical9.8-No
CVE-2026-70261Critical9.8-No
CVE-2026-70270Critical9.8-No
CVE-2026-70277Critical9.8-No
CVE-2026-70284Critical9.8-No
CVE-2026-70288Critical9.8-No
CVE-2026-70292Critical9.8-No
CVE-2026-70293Critical9.8-No
CVE-2026-70294Critical9.8-No
CVE-2026-70295Critical9.8-No
CVE-2026-81964Critical9.8-No
CVE-2026-83500Critical9.8-No
CVE-2026-83507Critical9.8-No
CVE-2026-83515Critical9.8-No
CVE-2026-83517Critical9.8-No
CVE-2026-83519Critical9.8-No
CVE-2026-83521Critical9.8-No
CVE-2026-83565Critical9.8-No
CVE-2026-83571Critical9.8-No
CVE-2026-83573Critical9.8-No
CVE-2026-83578Critical9.8-No
CVE-2026-83582Critical9.8-No
CVE-2026-83636Critical9.8-No
CVE-2026-83646Critical9.8-No
CVE-2026-83648Critical9.8-No
CVE-2026-83649Critical9.8-No
CVE-2026-83651Critical9.8-No
CVE-2026-83656Critical9.8-No
CVE-2026-83658Critical9.8-No
CVE-2026-83664Critical9.8-No
CVE-2026-83667Critical9.8-No
CVE-2026-83668Critical9.8-No
CVE-2026-83671Critical9.8-No
CVE-2026-83672Critical9.8-No
CVE-2026-83683Critical9.8-No
CVE-2026-83685Critical9.8-No
CVE-2026-83686Critical9.8-No
CVE-2026-83693Critical9.8-No
CVE-2026-83695Critical9.8-No
CVE-2026-83697Critical9.8-No
CVE-2026-83703Critical9.8-No
CVE-2026-83705Critical9.8-No
CVE-2026-83713Critical9.8-No
CVE-2026-83714Critical9.8-No
CVE-2026-83719Critical9.8-No
CVE-2026-83723Critical9.8-No
CVE-2026-83733Critical9.8-No
CVE-2026-83736Critical9.8-No
CVE-2026-83737Critical9.8-No
CVE-2026-83747Critical9.8-No
CVE-2026-83748Critical9.8-No
CVE-2026-83755Critical9.8-No
CVE-2026-83760Critical9.8-No
CVE-2026-83764Critical9.8-No
CVE-2026-83765Critical9.8-No
CVE-2026-83766Critical9.8-No
CVE-2026-83770Critical9.8-No
CVE-2026-83774Critical9.8-No
CVE-2026-83776Critical9.8-No
CVE-2026-83780Critical9.8-No
CVE-2026-83782Critical9.8-No
CVE-2026-83786Critical9.8-No
CVE-2026-83787Critical9.8-No
CVE-2026-83788Critical9.8-No
CVE-2026-83794Critical9.8-No
CVE-2026-83798Critical9.8-No
CVE-2026-83835Critical9.8-No
CVE-2026-83854Critical9.8-No
CVE-2026-83862Critical9.8-No
CVE-2026-83864Critical9.8-No
CVE-2026-83865Critical9.8-No
CVE-2026-83869Critical9.8-No
CVE-2026-83875Critical9.8-No
CVE-2026-83884Critical9.8-No
CVE-2026-83885Critical9.8-No
CVE-2026-83887Critical9.8-No
CVE-2026-83888Critical9.8-No
CVE-2026-83892Critical9.8-No
CVE-2026-83893Critical9.8-No
CVE-2026-83895Critical9.8-No
CVE-2026-83897Critical9.8-No
CVE-2026-83898Critical9.8-No
CVE-2026-83904Critical9.8-No
CVE-2026-83905Critical9.8-No
CVE-2026-83906Critical9.8-No
CVE-2026-83909Critical9.8-No
CVE-2026-83910Critical9.8-No
CVE-2026-83925Critical9.8-No
CVE-2026-83926Critical9.8-No
CVE-2026-83933Critical9.8-No
CVE-2026-83935Critical9.8-No
CVE-2026-84007Critical9.8-No
CVE-2026-84009Critical9.8-No
CVE-2026-84011Critical9.8-No
CVE-2026-84015Critical9.8-No
CVE-2026-85320Critical9.8-No
CVE-2026-85323Critical9.8-No
CVE-2026-85331Critical9.8-No
CVE-2026-85333Critical9.8-No
CVE-2026-85336Critical9.8-No
CVE-2026-85337Critical9.8-No
CVE-2026-85374Critical9.8-No
CVE-2026-85790Critical9.8-No
CVE-2026-85792Critical9.8-No
CVE-2026-85794Critical9.8-No
CVE-2026-85797Critical9.8-No
CVE-2026-85805Critical9.8-No
CVE-2026-85806Critical9.8-No
CVE-2026-85809Critical9.8-No
CVE-2026-85812Critical9.8-No
CVE-2026-85814Critical9.8-No
CVE-2026-85815Critical9.8-No
CVE-2026-85816Critical9.8-No
CVE-2026-85821Critical9.8-No
CVE-2026-85830Critical9.8-No
CVE-2026-85831Critical9.8-No
CVE-2026-85835Critical9.8-No
CVE-2026-85840Critical9.8-No
CVE-2026-85841Critical9.8-No
CVE-2026-85847Critical9.8-No
CVE-2026-85852Critical9.8-No
CVE-2026-85857Critical9.8-No
CVE-2026-85859Critical9.8-No
CVE-2026-85865Critical9.8-No
CVE-2026-85866Critical9.8-No
CVE-2026-85909Critical9.8-No
CVE-2026-85910Critical9.8-No
CVE-2026-85916Critical9.8-No
CVE-2026-85928Critical9.8-No
CVE-2026-85935Critical9.8-No
CVE-2026-85939Critical9.8-No
CVE-2026-87698Critical9.8-No
CVE-2026-87709Critical9.8-No
CVE-2026-87714Critical9.8-No
CVE-2026-88099Critical9.8-No
CVE-2026-88102Critical9.8-No
CVE-2026-88122Critical9.8-No
CVE-2026-88123Critical9.8-No
CVE-2026-88125Critical9.8-No
CVE-2026-88129Critical9.8-No
CVE-2026-88130Critical9.8-No
CVE-2026-88137Critical9.8-No
CVE-2026-88140Critical9.8-No
CVE-2026-88143Critical9.8-No
CVE-2026-88158Critical9.8-No
CVE-2026-88162Critical9.8-No
CVE-2026-88226Critical9.8-No
CVE-2026-95904Critical9.8-No
CVE-2026-96096Critical9.8-No
CVE-2026-96113Critical9.8-No
CVE-2026-96218Critical9.8-No
CVE-2026-96219Critical9.8-No
CVE-2026-96247Critical9.8-No
CVE-2026-96300Critical9.8-No
CVE-2026-96311Critical9.8-No
CVE-2026-96314Critical9.8-No
CVE-2026-96315Critical9.8-No
CVE-2026-96316Critical9.8-No
CVE-2026-96320Critical9.8-No
CVE-2026-96321Critical9.8-No
CVE-2026-96846Critical9.8-No
CVE-2026-96848Critical9.8-No
CVE-2026-96850Critical9.8-No
CVE-2026-96851Critical9.8-No
CVE-2026-96853Critical9.8-No
CVE-2026-96854Critical9.8-No
CVE-2026-96855Critical9.8-No
CVE-2026-96857Critical9.8-No
CVE-2026-96858Critical9.8-No
CVE-2026-96859Critical9.8-No
CVE-2026-96860Critical9.8-No
CVE-2026-96863Critical9.8-No
CVE-2026-96864Critical9.8-No
CVE-2026-96865Critical9.8-No
CVE-2026-96909Critical9.8-No
CVE-2026-96910Critical9.8-No
CVE-2026-96921Critical9.8-No
CVE-2026-96924Critical9.8-No
CVE-2026-96925Critical9.8-No
CVE-2026-96926Critical9.8-No
CVE-2026-96927Critical9.8-No
CVE-2026-96930Critical9.8-No
CVE-2026-96934Critical9.8-No
CVE-2026-96935Critical9.8-No
CVE-2026-96938Critical9.8-No
CVE-2026-96944Critical9.8-No
CVE-2026-96948Critical9.8-No
CVE-2026-97790Critical9.8-No
CVE-2026-97805Critical9.8-No
CVE-2026-97813Critical9.8-No
CVE-2026-97814Critical9.8-No
CVE-2026-97815Critical9.8-No
CVE-2026-97816Critical9.8-No
CVE-2026-97817Critical9.8-No
CVE-2026-97819Critical9.8-No
CVE-2026-97820Critical9.8-No
CVE-2026-97821Critical9.8-No
CVE-2026-97822Critical9.8-No
CVE-2026-97823Critical9.8-No
CVE-2026-97824Critical9.8-No
CVE-2026-97825Critical9.8-No
CVE-2026-97826Critical9.8-No
CVE-2026-97827Critical9.8-No
CVE-2026-97828Critical9.8-No
CVE-2026-97829Critical9.8-No
CVE-2026-97831Critical9.8-No
CVE-2026-97832Critical9.8-No
CVE-2026-97833Critical9.8-No
CVE-2026-97834Critical9.8-No
CVE-2026-97835Critical9.8-No
CVE-2026-97836Critical9.8-No
CVE-2026-97837Critical9.8-No
CVE-2026-97838Critical9.8-No
CVE-2026-97839Critical9.8-No
CVE-2026-97840Critical9.8-No
CVE-2026-97841Critical9.8-No
CVE-2026-97842Critical9.8-No
CVE-2026-97843Critical9.8-No
CVE-2026-97844Critical9.8-No
CVE-2026-96252Critical9.1-No
CVE-2026-105008Critical9.0-No
CVE-2026-85818Critical9.0-No
CVE-2026-100220High8.8-No
CVE-2026-102203High8.8-No
CVE-2026-102214High8.8-No
CVE-2026-102217High8.8-No
CVE-2026-102225High8.8-No
CVE-2026-103575High8.8-No
CVE-2026-105007High8.8-No
CVE-2026-105733High8.8-No
CVE-2026-108458High8.8-No
CVE-2026-108467High8.8-No
CVE-2026-69326High8.8-No
CVE-2026-69765High8.8-No
CVE-2026-69918High8.8-No
CVE-2026-69945High8.8-No
CVE-2026-69985High8.8-No
CVE-2026-70068High8.8-No
CVE-2026-70069High8.8-No
CVE-2026-70089High8.8-No
CVE-2026-70149High8.8-No
CVE-2026-70158High8.8-No
CVE-2026-70167High8.8-No
CVE-2026-70185High8.8-No
CVE-2026-70210High8.8-No
CVE-2026-70250High8.8-No
CVE-2026-70258High8.8-No
CVE-2026-70262High8.8-No
CVE-2026-70275High8.8-No
CVE-2026-70299High8.8-No
CVE-2026-70580High8.8-No
CVE-2026-77496High8.8-No
CVE-2026-83523High8.8-No
CVE-2026-83642High8.8-No
CVE-2026-83643High8.8-No
CVE-2026-83688High8.8-No
CVE-2026-83716High8.8-No
CVE-2026-83725High8.8-No
CVE-2026-83728High8.8-No
CVE-2026-83759High8.8-No
CVE-2026-83771High8.8-No
CVE-2026-83777High8.8-No
CVE-2026-83778High8.8-No
CVE-2026-83784High8.8-No
CVE-2026-83789High8.8-No
CVE-2026-83797High8.8-No
CVE-2026-83851High8.8-No
CVE-2026-83874High8.8-No
CVE-2026-83889High8.8-No
CVE-2026-83923High8.8-No
CVE-2026-83928High8.8-No
CVE-2026-83929High8.8-No
CVE-2026-83934High8.8-No
CVE-2026-85339High8.8-No
CVE-2026-85817High8.8-No
CVE-2026-85903High8.8-No
CVE-2026-85905High8.8-No
CVE-2026-85931High8.8-No
CVE-2026-85936High8.8-No
CVE-2026-88073High8.8-No
CVE-2026-88112High8.8-No
CVE-2026-88114High8.8-No
CVE-2026-88115High8.8-No
CVE-2026-88116High8.8-No
CVE-2026-88136High8.8-No
CVE-2026-88142High8.8-No
CVE-2026-88157High8.8-No
CVE-2026-88159High8.8-No
CVE-2026-88165High8.8-No
CVE-2026-88219High8.8-No
CVE-2026-96913High8.8-No
CVE-2026-96914High8.8-No
CVE-2026-96917High8.8-No
CVE-2026-96952High8.8-No
CVE-2026-83845High8.4-No
CVE-2026-85369High8.2-No
CVE-2026-100218High8.1-No
CVE-2026-108457High8.1-No
CVE-2026-108460High8.1-No
CVE-2026-69802High8.1-No
CVE-2026-69830High8.1-No
CVE-2026-69913High8.1-No
CVE-2026-70013High8.1-No
CVE-2026-70038High8.1-No
CVE-2026-70062High8.1-No
CVE-2026-70111High8.1-No
CVE-2026-70127High8.1-No
CVE-2026-70187High8.1-No
CVE-2026-70229High8.1-No
CVE-2026-83522High8.1-No
CVE-2026-83674High8.1-No
CVE-2026-83914High8.1-No
CVE-2026-84012High8.1-No
CVE-2026-85371High8.1-No
CVE-2026-85799High8.1-No
CVE-2026-85926High8.1-No
CVE-2026-88117High8.1-No
CVE-2026-88119High8.1-No
CVE-2026-88120High8.1-No
CVE-2026-88171High8.1-No
CVE-2026-88173High8.1-No
CVE-2026-88174High8.1-No
CVE-2026-83838High8.0-No
CVE-2026-88121High8.0-No
CVE-2026-96844High8.0-No
CVE-2026-100215High7.8-No
CVE-2026-100217High7.8-No
CVE-2026-102202High7.8-No
CVE-2026-102205High7.8-No
CVE-2026-102215High7.8-No
CVE-2026-102216High7.8-No
CVE-2026-102218High7.8-No
CVE-2026-102220High7.8-No
CVE-2026-102227High7.8-No
CVE-2026-103553High7.8-No
CVE-2026-103568High7.8-No
CVE-2026-105003High7.8-No
CVE-2026-105004High7.8-No
CVE-2026-108130High7.8-No
CVE-2026-108136High7.8-No
CVE-2026-49785High7.8-No
CVE-2026-68836High7.8-No
CVE-2026-69471High7.8-No
CVE-2026-69633High7.8-No
CVE-2026-69650High7.8-No
CVE-2026-69673High7.8-No
CVE-2026-69718High7.8-No
CVE-2026-69733High7.8-No
CVE-2026-69783High7.8-No
CVE-2026-69798High7.8-No
CVE-2026-69850High7.8-No
CVE-2026-69867High7.8-No
CVE-2026-69880High7.8-No
CVE-2026-69882High7.8-No
CVE-2026-69884High7.8-No
CVE-2026-69898High7.8-No
CVE-2026-69909High7.8-No
CVE-2026-69916High7.8-No
CVE-2026-69923High7.8-No
CVE-2026-69926High7.8-No
CVE-2026-69934High7.8-No
CVE-2026-69942High7.8-No
CVE-2026-69949High7.8-No
CVE-2026-69950High7.8-No
CVE-2026-69952High7.8-No
CVE-2026-69953High7.8-No
CVE-2026-69957High7.8-No
CVE-2026-69959High7.8-No
CVE-2026-69963High7.8-No
CVE-2026-69966High7.8-No
CVE-2026-70008High7.8-No
CVE-2026-70010High7.8-No
CVE-2026-70015High7.8-No
CVE-2026-70023High7.8-No
CVE-2026-70027High7.8-No
CVE-2026-70048High7.8-No
CVE-2026-70051High7.8-No
CVE-2026-70052High7.8-No
CVE-2026-70054High7.8-No
CVE-2026-70059High7.8-No
CVE-2026-70060High7.8-No
CVE-2026-70064High7.8-No
CVE-2026-70092High7.8-No
CVE-2026-70093High7.8-No
CVE-2026-70102High7.8-No
CVE-2026-70103High7.8-No
CVE-2026-70104High7.8-No
CVE-2026-70106High7.8-No
CVE-2026-70108High7.8-No
CVE-2026-70109High7.8-No
CVE-2026-70110High7.8-No
CVE-2026-70112High7.8-No
CVE-2026-70113High7.8-No
CVE-2026-70114High7.8-No
CVE-2026-70117High7.8-No
CVE-2026-70121High7.8-No
CVE-2026-70123High7.8-No
CVE-2026-70131High7.8-No
CVE-2026-70132High7.8-No
CVE-2026-70138High7.8-No
CVE-2026-70139High7.8-No
CVE-2026-70142High7.8-No
CVE-2026-70143High7.8-No
CVE-2026-70151High7.8-No
CVE-2026-70172High7.8-No
CVE-2026-70177High7.8-No
CVE-2026-70222High7.8-No
CVE-2026-70225High7.8-No
CVE-2026-70228High7.8-No
CVE-2026-70233High7.8-No
CVE-2026-70238High7.8-No
CVE-2026-70245High7.8-No
CVE-2026-70247High7.8-No
CVE-2026-70255High7.8-No
CVE-2026-70274High7.8-No
CVE-2026-70278High7.8-No
CVE-2026-70285High7.8-No
CVE-2026-70286High7.8-No
CVE-2026-70303High7.8-No
CVE-2026-70566High7.8-No
CVE-2026-73027High7.8-No
CVE-2026-78459High7.8-No
CVE-2026-81969High7.8-No
CVE-2026-83499High7.8-No
CVE-2026-83506High7.8-No
CVE-2026-83508High7.8-No
CVE-2026-83513High7.8-No
CVE-2026-83514High7.8-No
CVE-2026-83567High7.8-No
CVE-2026-83568High7.8-No
CVE-2026-83569High7.8-No
CVE-2026-83570High7.8-No
CVE-2026-83579High7.8-No
CVE-2026-83583High7.8-No
CVE-2026-83585High7.8-No
CVE-2026-83586High7.8-No
CVE-2026-83587High7.8-No
CVE-2026-83588High7.8-No
CVE-2026-83634High7.8-No
CVE-2026-83637High7.8-No
CVE-2026-83638High7.8-No
CVE-2026-83639High7.8-No
CVE-2026-83640High7.8-No
CVE-2026-83641High7.8-No
CVE-2026-83650High7.8-No
CVE-2026-83652High7.8-No
CVE-2026-83654High7.8-No
CVE-2026-83659High7.8-No
CVE-2026-83669High7.8-No
CVE-2026-83678High7.8-No
CVE-2026-83679High7.8-No
CVE-2026-83690High7.8-No
CVE-2026-83691High7.8-No
CVE-2026-83692High7.8-No
CVE-2026-83698High7.8-No
CVE-2026-83699High7.8-No
CVE-2026-83700High7.8-No
CVE-2026-83704High7.8-No
CVE-2026-83709High7.8-No
CVE-2026-83712High7.8-No
CVE-2026-83721High7.8-No
CVE-2026-83726High7.8-No
CVE-2026-83727High7.8-No
CVE-2026-83732High7.8-No
CVE-2026-83735High7.8-No
CVE-2026-83741High7.8-No
CVE-2026-83753High7.8-No
CVE-2026-83756High7.8-No
CVE-2026-83757High7.8-No
CVE-2026-83758High7.8-No
CVE-2026-83761High7.8-No
CVE-2026-83762High7.8-No
CVE-2026-83763High7.8-No
CVE-2026-83767High7.8-No
CVE-2026-83768High7.8-No
CVE-2026-83769High7.8-No
CVE-2026-83779High7.8-No
CVE-2026-83781High7.8-No
CVE-2026-83783High7.8-No
CVE-2026-83792High7.8-No
CVE-2026-83796High7.8-No
CVE-2026-83826High7.8-No
CVE-2026-83829High7.8-No
CVE-2026-83830High7.8-No
CVE-2026-83832High7.8-No
CVE-2026-83833High7.8-No
CVE-2026-83836High7.8-No
CVE-2026-83837High7.8-No
CVE-2026-83840High7.8-No
CVE-2026-83847High7.8-No
CVE-2026-83848High7.8-No
CVE-2026-83850High7.8-No
CVE-2026-83857High7.8-No
CVE-2026-83859High7.8-No
CVE-2026-83861High7.8-No
CVE-2026-83863High7.8-No
CVE-2026-83867High7.8-No
CVE-2026-83872High7.8-No
CVE-2026-83873High7.8-No
CVE-2026-83876High7.8-No
CVE-2026-83877High7.8-No
CVE-2026-83881High7.8-No
CVE-2026-83882High7.8-No
CVE-2026-83883High7.8-No
CVE-2026-83896High7.8-No
CVE-2026-83902High7.8-No
CVE-2026-83903High7.8-No
CVE-2026-83912High7.8-No
CVE-2026-83913High7.8-No
CVE-2026-83918High7.8-No
CVE-2026-83919High7.8-No
CVE-2026-83920High7.8-No
CVE-2026-83922High7.8-No
CVE-2026-83927High7.8-No
CVE-2026-83931High7.8-No
CVE-2026-83932High7.8-No
CVE-2026-84013High7.8-No
CVE-2026-84016High7.8-No
CVE-2026-85318High7.8-No
CVE-2026-85327High7.8-No
CVE-2026-85332High7.8-No
CVE-2026-85338High7.8-No
CVE-2026-85341High7.8-No
CVE-2026-85343High7.8-No
CVE-2026-85356High7.8-No
CVE-2026-85358High7.8-No
CVE-2026-85359High7.8-No
CVE-2026-85366High7.8-No
CVE-2026-85368High7.8-No
CVE-2026-85373High7.8-No
CVE-2026-85375High7.8-No
CVE-2026-85376High7.8-No
CVE-2026-85377High7.8-No
CVE-2026-85795High7.8-No
CVE-2026-85796High7.8-No
CVE-2026-85800High7.8-No
CVE-2026-85804High7.8-No
CVE-2026-85807High7.8-No
CVE-2026-85820High7.8-No
CVE-2026-85822High7.8-No
CVE-2026-85829High7.8-No
CVE-2026-85832High7.8-No
CVE-2026-85833High7.8-No
CVE-2026-85836High7.8-No
CVE-2026-85837High7.8-No
CVE-2026-85842High7.8-No
CVE-2026-85843High7.8-No
CVE-2026-85848High7.8-No
CVE-2026-85849High7.8-No
CVE-2026-85851High7.8-No
CVE-2026-85858High7.8-No
CVE-2026-85860High7.8-No
CVE-2026-85861High7.8-No
CVE-2026-85863High7.8-No
CVE-2026-85864High7.8-No
CVE-2026-85867High7.8-No
CVE-2026-85869High7.8-No
CVE-2026-85871High7.8-No
CVE-2026-85872High7.8-No
CVE-2026-85874High7.8-No
CVE-2026-85901High7.8-No
CVE-2026-85902High7.8-No
CVE-2026-85906High7.8-No
CVE-2026-85908High7.8-No
CVE-2026-85911High7.8-No
CVE-2026-85915High7.8-No
CVE-2026-85927High7.8-No
CVE-2026-85933High7.8-No
CVE-2026-85945High7.8-No
CVE-2026-87691High7.8-No
CVE-2026-87694High7.8-No
CVE-2026-87699High7.8-No
CVE-2026-87700High7.8-No
CVE-2026-87702High7.8-No
CVE-2026-87711High7.8-No
CVE-2026-87712High7.8-No
CVE-2026-88070High7.8-No
CVE-2026-88071High7.8-No
CVE-2026-88072High7.8-No
CVE-2026-88080High7.8-No
CVE-2026-88091High7.8-No
CVE-2026-88093High7.8-No
CVE-2026-88100High7.8-No
CVE-2026-88101High7.8-No
CVE-2026-88118High7.8-No
CVE-2026-88126High7.8-No
CVE-2026-88128High7.8-No
CVE-2026-88133High7.8-No
CVE-2026-88134High7.8-No
CVE-2026-88135High7.8-No
CVE-2026-88147High7.8-No
CVE-2026-88152High7.8-No
CVE-2026-88168High7.8-No
CVE-2026-88177High7.8-No
CVE-2026-88179High7.8-No
CVE-2026-88180High7.8-No
CVE-2026-88181High7.8-No
CVE-2026-88182High7.8-No
CVE-2026-88188High7.8-No
CVE-2026-88189High7.8-No
CVE-2026-88191High7.8-No
CVE-2026-88193High7.8-No
CVE-2026-88194High7.8-No
CVE-2026-96108High7.8-No
CVE-2026-96118High7.8-No
CVE-2026-96186High7.8-No
CVE-2026-96217High7.8-No
CVE-2026-96223High7.8-No
CVE-2026-96243High7.8-No
CVE-2026-96244High7.8-No
CVE-2026-96249High7.8-No
CVE-2026-96308High7.8-No
CVE-2026-96309High7.8-No
CVE-2026-96312High7.8-No
CVE-2026-96317High7.8-No
CVE-2026-96318High7.8-No
CVE-2026-96324High7.8-No
CVE-2026-96843High7.8-No
CVE-2026-96847High7.8-No
CVE-2026-96856High7.8-No
CVE-2026-96862High7.8-No
CVE-2026-96867High7.8-No
CVE-2026-96911High7.8-No
CVE-2026-96912High7.8-No
CVE-2026-96915High7.8-No
CVE-2026-96916High7.8-No
CVE-2026-96918High7.8-No
CVE-2026-96920High7.8-No
CVE-2026-96928High7.8-No
CVE-2026-96929High7.8-No
CVE-2026-96931High7.8-No
CVE-2026-96933High7.8-No
CVE-2026-96946High7.8-No
CVE-2026-96947High7.8-No
CVE-2026-96950High7.8-No
CVE-2026-96953High7.8-No
CVE-2026-97792High7.8-No
CVE-2026-97794High7.8-No
CVE-2026-97798High7.8-No
CVE-2026-97804High7.8-No
CVE-2026-97811High7.8-No
CVE-2026-102192High7.5-No
CVE-2026-103558High7.5-No
CVE-2026-103569High7.5-No
CVE-2026-103577High7.5-No
CVE-2026-105009High7.5-No
CVE-2026-105723High7.5-No
CVE-2026-108131High7.5-No
CVE-2026-69454High7.5-No
CVE-2026-69577High7.5-No
CVE-2026-69976High7.5-No
CVE-2026-69984High7.5-No
CVE-2026-69986High7.5-No
CVE-2026-69987High7.5-No
CVE-2026-69988High7.5-No
CVE-2026-69991High7.5-No
CVE-2026-69992High7.5-No
CVE-2026-69994High7.5-No
CVE-2026-69995High7.5-No
CVE-2026-69996High7.5-No
CVE-2026-69997High7.5-No
CVE-2026-69998High7.5-No
CVE-2026-70004High7.5-No
CVE-2026-70006High7.5-No
CVE-2026-70012High7.5-No
CVE-2026-70014High7.5-No
CVE-2026-70031High7.5-No
CVE-2026-70033High7.5-No
CVE-2026-70058High7.5-No
CVE-2026-70079High7.5-No
CVE-2026-70082High7.5-No
CVE-2026-70095High7.5-No
CVE-2026-70133High7.5-No
CVE-2026-70155High7.5-No
CVE-2026-70163High7.5-No
CVE-2026-70207High7.5-No
CVE-2026-83516High7.5-No
CVE-2026-83635High7.5-No
CVE-2026-83645High7.5-No
CVE-2026-83647High7.5-No
CVE-2026-83655High7.5-No
CVE-2026-83665High7.5-No
CVE-2026-83670High7.5-No
CVE-2026-83677High7.5-No
CVE-2026-83739High7.5-No
CVE-2026-83754High7.5-No
CVE-2026-83795High7.5-No
CVE-2026-83843High7.5-No
CVE-2026-83855High7.5-No
CVE-2026-83856High7.5-No
CVE-2026-83860High7.5-No
CVE-2026-84017High7.5-No
CVE-2026-85319High7.5-No
CVE-2026-85321High7.5-No
CVE-2026-85322High7.5-No
CVE-2026-85324High7.5-No
CVE-2026-85334High7.5-No
CVE-2026-85353High7.5-No
CVE-2026-85808High7.5-No
CVE-2026-85811High7.5-No
CVE-2026-87713High7.5-No
CVE-2026-87716High7.5-No
CVE-2026-96071High7.5-No
CVE-2026-96245High7.5-No
CVE-2026-96246High7.5-No
CVE-2026-96248High7.5-No
CVE-2026-96325High7.5-No
CVE-2026-96861High7.5-No
CVE-2026-96866High7.5-No
CVE-2026-96945High7.5-No
CVE-2026-97788High7.5-No
CVE-2026-97789High7.5-No
CVE-2026-97830High7.5-No
CVE-2026-83511High7.4-No
CVE-2026-87705High7.4-No
CVE-2026-96222High7.4-No
CVE-2026-108399High7.2-No
CVE-2026-85798High7.2-No
CVE-2026-69452High7.1-No
CVE-2026-70126High7.1-No
CVE-2026-83715High7.1-No
CVE-2026-85856High7.1-No
CVE-2026-100200High7.0-No
CVE-2026-100201High7.0-No
CVE-2026-100203High7.0-No
CVE-2026-100216High7.0-No
CVE-2026-100225High7.0-No
CVE-2026-102189High7.0-No
CVE-2026-102191High7.0-No
CVE-2026-102194High7.0-No
CVE-2026-102207High7.0-No
CVE-2026-102211High7.0-No
CVE-2026-103555High7.0-No
CVE-2026-108132High7.0-No
CVE-2026-108396High7.0-No
CVE-2026-108464High7.0-No
CVE-2026-108465High7.0-No
CVE-2026-108468High7.0-No
CVE-2026-109453High7.0-No
CVE-2026-69387High7.0-No
CVE-2026-69596High7.0-No
CVE-2026-69736High7.0-No
CVE-2026-69743High7.0-No
CVE-2026-69763High7.0-No
CVE-2026-69766High7.0-No
CVE-2026-69795High7.0-No
CVE-2026-69840High7.0-No
CVE-2026-69856High7.0-No
CVE-2026-69915High7.0-No
CVE-2026-69931High7.0-No
CVE-2026-69935High7.0-No
CVE-2026-69964High7.0-No
CVE-2026-69970High7.0-No
CVE-2026-69977High7.0-No
CVE-2026-70021High7.0-No
CVE-2026-70026High7.0-No
CVE-2026-70045High7.0-No
CVE-2026-70056High7.0-No
CVE-2026-70066High7.0-No
CVE-2026-70076High7.0-No
CVE-2026-70086High7.0-No
CVE-2026-70115High7.0-No
CVE-2026-70118High7.0-No
CVE-2026-70134High7.0-No
CVE-2026-70136High7.0-No
CVE-2026-70140High7.0-No
CVE-2026-70144High7.0-No
CVE-2026-70150High7.0-No
CVE-2026-70156High7.0-No
CVE-2026-70160High7.0-No
CVE-2026-70164High7.0-No
CVE-2026-70168High7.0-No
CVE-2026-70169High7.0-No
CVE-2026-70176High7.0-No
CVE-2026-70198High7.0-No
CVE-2026-70205High7.0-No
CVE-2026-70209High7.0-No
CVE-2026-70223High7.0-No
CVE-2026-70230High7.0-No
CVE-2026-70236High7.0-No
CVE-2026-70237High7.0-No
CVE-2026-70241High7.0-No
CVE-2026-70243High7.0-No
CVE-2026-70249High7.0-No
CVE-2026-70252High7.0-No
CVE-2026-70253High7.0-No
CVE-2026-70271High7.0-No
CVE-2026-70272High7.0-No
CVE-2026-70273High7.0-No
CVE-2026-72934High7.0-No
CVE-2026-72955High7.0-No
CVE-2026-72968High7.0-No
CVE-2026-72969High7.0-No
CVE-2026-81971High7.0-No
CVE-2026-83505High7.0-No
CVE-2026-83509High7.0-No
CVE-2026-83510High7.0-No
CVE-2026-83564High7.0-No
CVE-2026-83566High7.0-No
CVE-2026-83574High7.0-No
CVE-2026-83575High7.0-No
CVE-2026-83580High7.0-No
CVE-2026-83584High7.0-No
CVE-2026-83644High7.0-No
CVE-2026-83666High7.0-No
CVE-2026-83675High7.0-No
CVE-2026-83676High7.0-No
CVE-2026-83680High7.0-No
CVE-2026-83682High7.0-No
CVE-2026-83687High7.0-No
CVE-2026-83689High7.0-No
CVE-2026-83694High7.0-No
CVE-2026-83696High7.0-No
CVE-2026-83701High7.0-No
CVE-2026-83702High7.0-No
CVE-2026-83707High7.0-No
CVE-2026-83708High7.0-No
CVE-2026-83710High7.0-No
CVE-2026-83717High7.0-No
CVE-2026-83718High7.0-No
CVE-2026-83722High7.0-No
CVE-2026-83724High7.0-No
CVE-2026-83738High7.0-No
CVE-2026-83740High7.0-No
CVE-2026-83749High7.0-No
CVE-2026-83750High7.0-No
CVE-2026-83752High7.0-No
CVE-2026-83775High7.0-No
CVE-2026-83785High7.0-No
CVE-2026-83793High7.0-No
CVE-2026-83827High7.0-No
CVE-2026-83834High7.0-No
CVE-2026-83839High7.0-No
CVE-2026-83841High7.0-No
CVE-2026-83842High7.0-No
CVE-2026-83846High7.0-No
CVE-2026-83852High7.0-No
CVE-2026-83866High7.0-No
CVE-2026-83868High7.0-No
CVE-2026-83871High7.0-No
CVE-2026-83879High7.0-No
CVE-2026-83886High7.0-No
CVE-2026-83899High7.0-No
CVE-2026-83900High7.0-No
CVE-2026-83901High7.0-No
CVE-2026-83908High7.0-No
CVE-2026-83911High7.0-No
CVE-2026-83915High7.0-No
CVE-2026-83916High7.0-No
CVE-2026-83917High7.0-No
CVE-2026-83921High7.0-No
CVE-2026-83924High7.0-No
CVE-2026-83930High7.0-No
CVE-2026-84014High7.0-No
CVE-2026-84018High7.0-No
CVE-2026-84019High7.0-No
CVE-2026-84020High7.0-No
CVE-2026-85328High7.0-No
CVE-2026-85329High7.0-No
CVE-2026-85342High7.0-No
CVE-2026-85352High7.0-No
CVE-2026-85354High7.0-No
CVE-2026-85355High7.0-No
CVE-2026-85361High7.0-No
CVE-2026-85362High7.0-No
CVE-2026-85364High7.0-No
CVE-2026-85365High7.0-No
CVE-2026-85367High7.0-No
CVE-2026-85370High7.0-No
CVE-2026-85372High7.0-No
CVE-2026-85791High7.0-No
CVE-2026-85802High7.0-No
CVE-2026-85803High7.0-No
CVE-2026-85810High7.0-No
CVE-2026-85823High7.0-No
CVE-2026-85824High7.0-No
CVE-2026-85825High7.0-No
CVE-2026-85826High7.0-No
CVE-2026-85827High7.0-No
CVE-2026-85828High7.0-No
CVE-2026-85834High7.0-No
CVE-2026-85846High7.0-No
CVE-2026-85853High7.0-No
CVE-2026-85854High7.0-No
CVE-2026-85855High7.0-No
CVE-2026-85868High7.0-No
CVE-2026-85870High7.0-No
CVE-2026-85904High7.0-No
CVE-2026-85912High7.0-No
CVE-2026-85914High7.0-No
CVE-2026-85918High7.0-No
CVE-2026-85920High7.0-No
CVE-2026-85930High7.0-No
CVE-2026-85934High7.0-No
CVE-2026-85941High7.0-No
CVE-2026-85943High7.0-No
CVE-2026-87693High7.0-No
CVE-2026-87704High7.0-No
CVE-2026-87708High7.0-No
CVE-2026-87710High7.0-No
CVE-2026-87715High7.0-No
CVE-2026-88076High7.0-No
CVE-2026-88096High7.0-No
CVE-2026-88098High7.0-No
CVE-2026-88106High7.0-No
CVE-2026-88107High7.0-No
CVE-2026-88110High7.0-No
CVE-2026-88124High7.0-No
CVE-2026-88127High7.0-No
CVE-2026-88139High7.0-No
CVE-2026-88141High7.0-No
CVE-2026-88146High7.0-No
CVE-2026-88149High7.0-No
CVE-2026-88160High7.0-No
CVE-2026-88161High7.0-No
CVE-2026-95943High7.0-No
CVE-2026-96209High7.0-No
CVE-2026-96216High7.0-No
CVE-2026-96250High7.0-No
CVE-2026-96253High7.0-No
CVE-2026-96254High7.0-No
CVE-2026-96301High7.0-No
CVE-2026-96302High7.0-No
CVE-2026-96304High7.0-No
CVE-2026-96305High7.0-No
CVE-2026-96307High7.0-No
CVE-2026-96310High7.0-No
CVE-2026-96313High7.0-No
CVE-2026-96319High7.0-No
CVE-2026-96322High7.0-No
CVE-2026-96323High7.0-No
CVE-2026-96852High7.0-No
CVE-2026-96868High7.0-No
CVE-2026-96923High7.0-No
CVE-2026-96932High7.0-No
CVE-2026-96937High7.0-No
CVE-2026-96939High7.0-No
CVE-2026-96949High7.0-No
CVE-2026-97787High7.0-No
CVE-2026-97793High7.0-No
CVE-2026-97810High7.0-No
CVE-2026-97812High7.0-No

What the press says about this update

Trusted-source coverage of the CVEs this update fixes, pulled live from their own feeds.

“Microsoft Windows Shell 0-Day Vulnerability Actively Exploited in Attacks” Cyber Security News, 2026-10-14
“Patch Tuesday - October 2026” Rapid7, 2026-10-13
“Microsoft’s October 2026 Patch Tuesday addresses 1407 CVEs (CVE-2026-96951)” Tenable, 2026-10-13
“The October 2026 Security Update Review” Zero Day Initiative, 2026-10-13

Scope and sources

Affected products
Also released in October 2026

KB5099444

186 CVEs · Critical · exploited

KB5099445

175 CVEs · Critical · exploited

KB5099535

262 CVEs · Critical · exploited

KB5099536

390 CVEs · Critical · exploited

KB5099538

313 CVEs · Critical · exploited

KB5099539

315 CVEs · Critical · exploited

KB5099540

327 CVEs · Critical · exploited

KB5101649

384 CVEs · Critical · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5126646 page (Microsoft Support)Microsoft Update CatalogMicrosoft Security Update Guide

See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.

New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
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