CVE-2026-85331: Windows Device Association Service out-of-bounds read

CVE-2026-85331 · Severity: medium · CVSS 6.5 · Published 2026-10-13

Windows Device Association Service contains an out-of-bounds read vulnerability that allows an authorized attacker to read sensitive information over the network. This could expose data such as credentials, configuration details, or other confidential information accessible through the service.

Technologies: Microsoft Windows Device Association Service, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 23h2, Microsoft Windows 11 24h2, Microsoft Windows 11 25h2, Microsoft Windows 11 26h1, Microsoft Windows 11 26h2, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2025. Vendors: Microsoft.

Quick answers

Is CVE-2026-85331 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-85331 being exploited in the wild.
How severe is CVE-2026-85331?
Medium severity, with a CVSS score of 6.5, published 13 October 2026.
Which products and versions are affected?
Microsoft Windows Device Association Service <UNKNOWN>.
Is there a fix for CVE-2026-85331?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-85331 attacked?
It is attacked over the network.
Am I affected by CVE-2026-85331?
Check whether you run Microsoft Windows Device Association Service, Microsoft Windows 10 1607, Microsoft Windows 10 1809 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An out-of-bounds read vulnerability exists in the Windows Device Association Service, allowing an authenticated attacker to read memory beyond allocated buffer boundaries. The vulnerability requires network access and prior authorization; successful exploitation results in information disclosure from the affected service.

Affected products

  • Microsoft Windows (Device Association Service) <UNKNOWN>

Timeline

  • 2026-10-13: advisory

References

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