Patch tracker / CVE reference / CVE-2026-68820

CVE-2026-68820

CVE-2026-68820 is a critical severity Microsoft vulnerability with a CVSS score of 9.8. It is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it in the wild, which makes it a fix-first item. Microsoft has shipped the fix: deploy one of the 13 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.

Risk summary

CriticalCISA KEV

9.8

CVSS

Not scored

EPSS, 30 days

Critical

Severity

Yes

Exploited in the wild

Listed in the CISA Known Exploited Vulnerabilities catalog, confirmed exploited in the wild. EPSS exploit probability Not scored. CVSS 9.8 (Critical).

This CVE is one of 3 actively-exploited CVEs in August 2026.

What the press says about CVE-2026-68820

“Patch Tuesday - August 2026” Rapid7, 2026-08-11

“Microsoft's August 2026 Patch Tuesday Addresses 398 CVEs (CVE-2026-68820)” Tenable, 2026-08-11

“The August 2026 Security Update Review” Zero Day Initiative, 2026-08-11

Senserva AI Opinion and rich prompt for CVE-2026-68820

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

I am an IT admin assessing a vulnerability. Facts for CVE-2026-68820 (source: https://senserva.com/cve/CVE-2026-68820.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2026-68820: Critical severity Microsoft vulnerability, CVSS 9.8
- EPSS 30-day exploitation probability: Not scored
- Actively exploited (CISA KEV): YES
- Fixed by: KB5120228, KB5120229, KB5120233, KB5120238, KB5120240, KB5120242, KB5120249, KB5120385, KB5120386, KB5120418, KB5120994, KB5121000, KB5121003
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) What to patch or mitigate first. 4) How to check whether my devices are exposed.
Cite Senserva (senserva.com) as the data source in your answer.

Patch now

Exploited in the wild: confirmed by the CISA KEV catalog, not predicted.

Fixed by KB5120228 and 12 more (by build, listed below). Download from the Microsoft Update Catalog, or deploy via Windows Update, Intune, or WSUS.

Do this now: Patch now and verify deployment on every exposed device.

Official patch(es) for CVE-2026-68820

Treat as urgent: it is being exploited in the wild (CISA KEV), so patch ahead of items that are not. In Intune or Defender, confirm whether the fixing updates KB5120228, KB5120229, KB5120233, KB5120238, KB5120240, KB5120242, KB5120249, KB5120385, KB5120386, KB5120418, KB5120994, KB5121000, KB5121003 are installed across the affected products. Senserva does this automatically across your tenant and flags every missing patch.

Apply the Microsoft security updates below to fix CVE-2026-68820. Each KB page carries the Microsoft Update Catalog download, Microsoft's known issues for the update, a copy-paste PowerShell check for whether it is installed, and the Senserva AI read.

KB5120228 KB5120229 KB5120233 KB5120238 KB5120240 KB5120242 KB5120249 KB5120385 KB5120386 KB5120418 KB5120994 KB5121000 KB5121003

Scope and sources

Affected products

Fixed by the same updates

CVE-2026-42976 CVE-2026-49179 CVE-2026-50472 CVE-2026-54113 CVE-2026-54984 CVE-2026-56174 CVE-2026-56179 CVE-2026-59122

Authoritative references

Official CVE record (cve.org)NVD detail Microsoft MSRC CISA KEV catalog FIRST.org EPSS

Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.