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PatchSiren cyber security CVE debrief

CVE-2026-62793 Microsoft CVE debrief

CVE-2026-62793 is a buffer over-read vulnerability in Windows NTFS, allowing an authorized attacker to disclose information locally. The vulnerability has a CVSS score of 5.5 and affects multiple versions of Windows 10, Windows 11, and Windows Server editions. Microsoft has released patches for this vulnerability. The vulnerability is considered medium-priority due to the local information disclosure risk. System administrators and security teams responsible for Windows systems, especially those with high-risk exposure or regulatory requirements, should prioritize patching. The CVE record was published on 2026-08-11T17:18:33.180Z and has not been modified since then.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-11
Original CVE updated
2026-08-16
Advisory published
2026-08-11
Advisory updated
2026-08-16

Who should care

System administrators and security teams responsible for Windows systems, especially those with high-risk exposure or regulatory requirements, should prioritize patching and monitor system logs for suspicious activity. They should also review relevant monitoring, detection, and logs for exposed assets that need extra review.

Technical summary

CVE-2026-62793 is a buffer over-read vulnerability in Windows NTFS that allows an authorized attacker to disclose information locally. The vulnerability has a CVSS score of 5.5 and affects multiple versions of Windows 10, Windows 11, and Windows Server editions, including Windows Server 2012 through 2025. Microsoft has released patches for this vulnerability, and system administrators should prioritize patching.

Defensive priority

Medium-priority defensive actions are recommended due to the local information disclosure risk.

Recommended defensive actions

  • Apply patches from Microsoft as soon as available
  • Inventory affected Windows systems and prioritize patching
  • Monitor system logs for suspicious activity
  • Implement compensating controls such as access restrictions
  • Review relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE-2026-62793 record indicates a buffer over-read vulnerability in Windows NTFS, allowing an authorized attacker to disclose information locally. The CVSS score is 5.5, with a severity of MEDIUM. Multiple Windows versions and server editions are affected, including Windows 10, Windows 11, and Windows Server 2012 through 2025.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-62793 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-62793

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

  • CVE-2026-62793 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-62793

    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.