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PatchSiren cyber security CVE debrief

CVE-2026-27920 Microsoft CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-14T16:58:10.717Z and has not been modified since then. The NVD entry is currently High. This vulnerability in Windows UPnP Device Host, caused by an untrusted pointer dereference, allows authorized attackers to elevate privileges locally. Defenders, system administrators, and security teams should assess exposure and apply patches to prevent potential local privilege escalation attacks. The CVE record and source item provide details on the vulnerability, emphasizing verification and patching to prevent exploitation. Official advisories and CVE records should be reviewed for

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-14
Original CVE updated
2026-10-15
Advisory published
2026-04-14
Advisory updated
2026-10-15

Who should care

Defenders, system administrators, and security teams responsible for Windows infrastructure should assess exposure and apply patches to prevent potential local privilege escalation attacks.

Why it matters

CVE-2026-27920 requires verification and patching to prevent local privilege escalation in Windows UPnP Device Host, impacting defenders, system administrators, and security teams.

  • Verify and apply patches for Windows UPnP Device Host to prevent exploitation
  • Assess exposure of Windows UPnP Device Host in local privilege escalation scenarios
  • Monitor for potential local privilege escalation attempts
  • Review and update defensive configurations for UPnP Device Host

Technical summary

The Windows UPnP Device Host Elevation of Privilege Vulnerability (CVE-2026-27920) is caused by an untrusted pointer dereference, allowing authorized attackers to elevate privileges locally. Affected versions include Windows 10, Windows 11, and Windows Server versions.

Defensive priority

Defenders should prioritize verifying exposure and applying patches for Windows UPnP Device Host, especially in local privilege escalation scenarios.

Recommended defensive actions

  • Verify exposure of Windows UPnP Device Host in the environment
  • Apply patches provided by Microsoft for affected Windows versions
  • Monitor for potential local privilege escalation attempts
  • Review and update defensive configurations for UPnP Device Host

Evidence notes

The CVE record and source item provide details on the vulnerability in Windows UPnP Device Host, allowing an authorized attacker to elevate privileges locally due to an untrusted pointer dereference.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-27920 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-27920

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-27920 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-27920

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.