CVE-2026-85852: Microsoft Windows Management Instrumentation out-of-bounds read

CVE-2026-85852 · Severity: medium · CVSS 5.5 · Published 2026-10-13

Windows Management Instrumentation, a core Windows system service used to manage and monitor computers, contains an out-of-bounds memory read vulnerability. An authorized attacker with local access could exploit this flaw to read sensitive information from system memory, potentially exposing configuration data, credentials, or other confidential details.

Technologies: Microsoft Windows Management Instrumentation. Vendors: Microsoft.

Quick answers

Is CVE-2026-85852 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-85852 being exploited in the wild.
How severe is CVE-2026-85852?
Medium severity, with a CVSS score of 5.5, published 13 October 2026.
Which products and versions are affected?
Microsoft Windows Management Instrumentation.
Is there a fix for CVE-2026-85852?
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-2026-85852 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-85852?
Check whether you run Microsoft Windows Management Instrumentation. 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 in Windows Management Instrumentation allows an authorized local attacker to disclose sensitive information. The vulnerability requires prior authentication and local access to exploit. A successful attack could leak memory contents without code execution.

Affected products

  • Microsoft Windows Management Instrumentation

Timeline

  • 2026-10-13: disclosed

References

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