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PatchSiren cyber security CVE debrief

CVE-2026-85331 Microsoft CVE debrief

A vulnerability in the Windows Device Association Service allows an authorized attacker to disclose information over a network. This issue is rated as MEDIUM with a CVSS score of 6.5. The vulnerability is caused by an out-of-bounds read in the Windows Device Association Service, which can be exploited by an attacker to disclose information. Defenders should assess exposure and apply patches from Microsoft as soon as possible. The CVE Program and NVD provide official records of this vulnerability.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 6.5
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 systems, particularly those using Windows Device Association Service, should assess exposure and apply patches.

Why it matters

CVE-2026-85331 is a MEDIUM-rated vulnerability in Windows Device Association Service that allows information disclosure over a network. Defenders should verify exposure, apply patches, and monitor for potential disclosure attempts.

  • Verify exposure of Windows Device Association Service
  • Apply patches from Microsoft to prevent information disclosure
  • Monitor for potential information disclosure attempts

Technical summary

An out-of-bounds read in the Windows Device Association Service allows an authorized attacker to disclose information over a network. The vulnerability is caused by a flaw in the Windows Device Association Service that can be exploited by an attacker to disclose information. The CVE Program and NVD provide official records of this vulnerability. Microsoft has released a patch for this issue.

Defensive priority

Defenders should prioritize verifying exposure of Windows Device Association Service in their environment and apply patches from Microsoft as soon as possible.

Recommended defensive actions

  • Verify exposure of Windows Device Association Service in the environment
  • Apply patches from Microsoft
  • Monitor for potential information disclosure attempts

Evidence notes

The CVE Program and NVD provide official records of this vulnerability. Microsoft has released a patch for this issue. The vulnerability is rated as MEDIUM with a CVSS score of 6.5. The CVE record was published on 2026-10-13T19:00:01.851Z and has not been modified since then. The official CVE Program record and NVD detail page provide additional information about the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-85331 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-85331

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

  • CVE-2026-85331 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-85331

    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.