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PatchSiren cyber security CVE debrief

CVE-2026-69351 Microsoft CVE debrief

The CVE-2026-69351 vulnerability in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to disclose information locally. This issue has a CVSS score of 5.5 and is classified as MEDIUM severity. Defenders responsible for local Windows UPnP Device Host deployments should assess exposure and verify access controls, especially where unauthorized actors may have local access. The CVE record was published on 2026-09-08T18:18:54.317Z and has not been modified since then. The NVD entry is currently Analyzed.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-17
Advisory published
2026-09-08
Advisory updated
2026-09-17

Who should care

Defenders responsible for local Windows UPnP Device Host deployments, especially where unauthorized actors may have local access, should assess exposure and verify access controls.

Why it matters

Defenders should prioritize verifying exposure in local Windows UPnP Device Host deployments, especially where unauthorized actors may have local access, to prevent information disclosure.

  • Verify exposure in local Windows UPnP Device Host deployments
  • Assess unauthorized actor access to sensitive information
  • Review and update access controls for UPnP Device Host

Technical summary

The vulnerability in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to disclose information locally, with a CVSS score of 5.5 and severity of MEDIUM. This issue is caused by the exposure of private personal information to an unauthorized actor. Defenders should prioritize verifying exposure in local Windows UPnP Device Host deployments, especially where unauthorized actors may have local access.

Defensive priority

Defenders should prioritize verifying exposure in local Windows UPnP Device Host deployments, especially where unauthorized actors may have local access.

Recommended defensive actions

  • Verify local Windows UPnP Device Host deployments for exposure
  • Assess unauthorized actor access to sensitive information
  • Review and update access controls for UPnP Device Host

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in Windows Universal Plug and Play (UPnP) Device Host, allowing an authorized attacker to disclose information locally.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-69351 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-69351

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

  • CVE-2026-69351 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-69351

    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.