Patch tracker / Products / Windows 11 Version 26H1 - extra

Windows 11 Version 26H1 - extra: vulnerabilities and security updates

Every CVE affecting Windows 11 Version 26H1 - extra and the Microsoft update (KB) that fixes it, ranked by real-world risk. Actively exploited (CISA KEV) first, then EPSS exploit probability, on top of CVSS severity.

CVEs
62
Updates (KBs)
1
Actively exploited (KEV)
0
Critical Severity
13

CVEs affecting Windows 11 Version 26H1 - extra

CVESeverityCVSSEPSSStatus
CVE-2026-34348Critical9.94.9%-
CVE-2025-54518Critical9.84.7%-
CVE-2026-21530Critical9.82.3%-
CVE-2026-32170Critical9.82.3%-
CVE-2026-32209Critical9.82.3%-
CVE-2026-34339Critical9.82.3%-
CVE-2026-35422Critical9.82.3%-
CVE-2026-35423Critical9.82.3%-
CVE-2026-40380Critical9.82.3%-
CVE-2026-41096Critical9.82.3%-
CVE-2026-41097Critical9.82.3%-
CVE-2026-48566Critical9.82.2%-
CVE-2026-35419Critical9.82.2%-
CVE-2026-34329High8.82.3%-
CVE-2026-40403High8.82.3%-
CVE-2026-40415High8.12.3%-
CVE-2026-33834High7.82.3%-
CVE-2026-33835High7.82.3%-
CVE-2026-33837High7.82.3%-
CVE-2026-33838High7.82.3%-
CVE-2026-33841High7.82.3%-
CVE-2026-34330High7.82.3%-
CVE-2026-34333High7.82.3%-
CVE-2026-34334High7.82.3%-
CVE-2026-34336High7.82.3%-
CVE-2026-34337High7.82.3%-
CVE-2026-34338High7.82.3%-
CVE-2026-34343High7.82.3%-
CVE-2026-34344High7.82.3%-
CVE-2026-34351High7.82.3%-
CVE-2026-35415High7.82.3%-
CVE-2026-35417High7.82.3%-
CVE-2026-35418High7.82.3%-
CVE-2026-35421High7.82.3%-
CVE-2026-40377High7.82.3%-
CVE-2026-40382High7.82.3%-
CVE-2026-40397High7.82.3%-
CVE-2026-40398High7.82.3%-
CVE-2026-40399High7.82.3%-
CVE-2026-40407High7.82.3%-
CVE-2026-40408High7.82.3%-
CVE-2026-41088High7.82.3%-
CVE-2026-33840High7.82.2%-
CVE-2026-40369High7.82.2%-
CVE-2026-42896High7.82.2%-
CVE-2026-42825High7.04.7%-
CVE-2026-32161High7.52.3%-
CVE-2026-35424High7.52.3%-
CVE-2026-40406High7.52.3%-
CVE-2026-40405High7.52.2%-
CVE-2026-40413High7.42.3%-
CVE-2026-40414High7.42.3%-
CVE-2026-40401High7.12.3%-
CVE-2026-33839High7.02.3%-
CVE-2026-34331High7.02.3%-
CVE-2026-34340High7.02.3%-
CVE-2026-34341High7.02.3%-
CVE-2026-34342High7.02.3%-
CVE-2026-34345High7.02.3%-
CVE-2026-34347High7.02.3%-
CVE-2026-35416High7.02.3%-
CVE-2026-40410High7.02.3%-

Updates (KBs) for Windows 11 Version 26H1 - extra

UpdateReleasedSeverityCVSSEPSSCVEsStatus
KB50895482026-07-14Critical9.82.2%62-

Ranked across all products on the Microsoft patch tracker and the CVE and vulnerability management reference. Browse every product: product index.

Most searched on Senserva right now

KB5122876 install notes and severity KB5126052: the full CVE list KB5122882: patch details KB5123099: the full CVE list KB5120708 download and what it fixes KB5122871 install notes and severity KB5129235 install notes and severity KB5122878: patch details KB5120238 download and what it fixes KB5129238 download and what it fixes
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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