Patch tracker / CVE reference / CVE-2026-27920

CVE-2026-27920

CVE-2026-27920 is a Microsoft vulnerability that Microsoft rates Important, with a CVSS score of 7.8 (High). Microsoft has shipped the fix: deploy one of the 11 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.

Our data comes from Microsoft, CISA and other public sources, and it can be wrong or out of date. If you are unsure, check the linked source before you act, and tell us when we are wrong so we can fix it.

Risk summary

High
7.8
CVSS v3
3.5%
EPSS, 30 days
High
Severity

Not in the CISA KEV catalog. EPSS exploit probability 3.5%. CVSS 7.8 (High).

This CVE is among the lower half of tracked Microsoft CVEs by EPSS exploit probability.

Senserva AI Opinion for CVE-2026-27920

A second elevation of privilege path through the UPnP Device Host service, this time reaching Windows 11 26H1 on ARM64 and x64 as well as Windows 10 1809. Severity is Critical at CVSS 9.8 and EPSS sits at 64 percent. The spread across both the newest and one of the oldest supported client builds means almost any unpatched endpoint could be in scope.

Do this: Check whether the UPnP Device Host service is running in your standard desktop image and patch or disable it today.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2026-27920

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

Schedule normally
No exploitation observed as of 2026-10-19: not in the CISA KEV catalog, EPSS 4%.
Fixed by KB5082052 and 10 more (by build, listed below). Download from the Microsoft Update Catalog, or deploy via Windows Update, Intune, or WSUS.
Do this now: Deploy with your normal update cycle. This page refreshes daily; the verdict changes the day the data does.

Official patch(es) for CVE-2026-27920

Moderate priority: schedule it in your normal patch cycle. In Intune or Defender, confirm whether the fixing updates KB5082052, KB5082060, KB5082063, KB5082123, KB5082126, KB5082127, KB5082142, KB5082198, KB5082200, KB5083768, KB5083769 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-2026-27920. 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.

KB5082052KB5082060KB5082063KB5082123KB5082126KB5082127KB5082142KB5082198KB5082200KB5083768KB5083769

Scope and sources

Affected products
Fixed by the same updates
CVE-2026-33824CVE-2026-26167CVE-2026-26178CVE-2026-32157CVE-2026-32225CVE-2026-27928CVE-2026-32091CVE-2026-32162
Authoritative references
Official CVE record (cve.org)NVD detailMicrosoft MSRCFIRST.org EPSS

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