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PatchSiren cyber security CVE debrief

CVE-2026-85793 Microsoft CVE debrief

A Windows Sysmain Service Information Disclosure Vulnerability allows an authorized attacker to disclose information locally. Multiple Windows versions are affected, including Windows 10, Windows 11, and Windows Server. The vulnerability has a medium severity and requires attention from system administrators and security teams. Affected Windows versions need to be patched to prevent potential local information disclosure. The vulnerability allows an authorized attacker to disclose sensitive system information locally.

Vendor
Microsoft
Product
Windows 10 Version 1607
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

System administrators and security teams responsible for Windows systems, particularly those using affected versions, should assess exposure and prioritize patching.

Why it matters

The Windows Sysmain Service Information Disclosure Vulnerability requires attention from system administrators and security teams. Affected Windows versions need to be patched to prevent potential local information disclosure. The vulnerability has a medium severity and should be addressed with a medium priority.

  • Potential for local information disclosure
  • Need for patching and verification
  • Possible impact on system confidentiality

Technical summary

The Windows Sysmain Service Information Disclosure Vulnerability allows an authorized attacker to disclose sensitive system information locally. The vulnerability affects multiple Windows versions, including Windows 10, Windows 11, and Windows Server. The CVSS score is 5.5, indicating a medium severity.

Defensive priority

Medium priority for patching and verification

Recommended defensive actions

  • Patch affected Windows versions
  • Verify system configurations
  • Monitor for local unauthorized access

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. However, additional information on exploitation and impact is limited. The CVE record was published on 2026-10-13T19:00:05.060Z and has not been modified since then. The official CVE Program record and NVD detail page provide source-provided CVE metadata and vulnerability assessment. There are no known reports of exploitation. The vulnerability affects multiple Windows versions, including Windows 10, Windows 11, and

Sources and references

Verified primary and authoritative sources

  • CVE-2026-85793 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-85793

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

  • CVE-2026-85793 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-85793

    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.