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PatchSiren cyber security CVE debrief

CVE-2026-85938 Microsoft CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-10-13T19:00:15.588Z and has not been modified since then. The vulnerability in Windows Broadcast DVR User Service allows an authorized attacker to disclose information locally. Defenders responsible for Windows 10 and Windows 11 systems, especially those with the Windows Broadcast DVR User Service enabled, should assess exposure and apply patches. The CVE Program and NIST NVD provide details on the vulnerability. Microsoft provides a patch for the vulnerability.

Vendor
Microsoft
Product
Windows 10 Version 1809
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-13
Original CVE updated
2026-10-13
Advisory published
2026-10-13
Advisory updated
2026-10-13

Who should care

Defenders responsible for Windows 10 and Windows 11 systems, especially those with the Windows Broadcast DVR User Service enabled, should assess exposure and apply patches.

Why it matters

The vulnerability in Windows Broadcast DVR User Service allows an authorized attacker to disclose information locally, requiring defenders to verify exposure and apply patches.

  • Verify exposure in Windows 10 and Windows 11 systems.
  • Apply patches provided by Microsoft.
  • Monitor systems for potential information disclosure.

Technical summary

The Windows Broadcast DVR User Service has an improper access control vulnerability, allowing an authorized attacker to disclose information locally. This vulnerability affects Windows 10 and Windows 11 systems, especially those with the Windows Broadcast DVR User Service enabled. Defenders should prioritize verifying exposure in these systems and apply patches provided by Microsoft.

Defensive priority

Defenders should prioritize verifying exposure in Windows 10 and Windows 11 systems, especially those with the Windows Broadcast DVR User Service enabled.

Recommended defensive actions

  • Verify exposure in Windows 10 and Windows 11 systems, especially those with the Windows Broadcast DVR User Service enabled.
  • Apply patches provided by Microsoft for the affected systems.
  • Monitor systems for potential information disclosure.

Evidence notes

The CVE record and source item provide details on the vulnerability in Windows Broadcast DVR User Service, but do not specify exploitation or impact. Microsoft provides a patch for the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-85938 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-85938

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

  • CVE-2026-85938 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-85938

    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.