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CVE-2026-62758 Microsoft CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-11T17:18:28.677Z and has not been modified since then. The NVD entry is currently Analyzed. This vulnerability, CVE-2026-62758, is a heap-based buffer overflow in Windows Remote Access Connection Manager, which could allow an authorized attacker to elevate privileges locally. The vulnerability affects multiple Windows versions and editions, including Windows 10, Windows 11, and various Windows Server versions. Microsoft has released patches for this vulnerability, and it is essential to apply them as soon as possible. System administrators and security teams should be aware of this vulnerability and take immediate action to apply patches or mitigations. The CVE has a CVSS score of 7.8 and is classified as HIGH severity.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.8
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 managing Windows-based systems, particularly those using Windows Remote Access Connection Manager, should be aware of this vulnerability and take immediate action to apply patches or mitigations.

Technical summary

The CVE-2026-62758 vulnerability is caused by a heap-based buffer overflow in Windows Remote Access Connection Manager. This could allow an authorized attacker to elevate privileges locally. The vulnerability affects multiple Windows versions and editions, including Windows 10, Windows 11, and various Windows Server versions. Microsoft has released patches for this vulnerability, and it is essential to apply them as soon as possible.

Defensive priority

This vulnerability allows an authorized attacker to elevate privileges locally, which could have significant impacts on system security. Therefore, it is essential to apply patches or mitigations provided by the vendor as soon as possible.

Recommended defensive actions

  • Apply patches or mitigations provided by Microsoft as soon as possible.
  • Ensure that all affected Windows versions and editions are updated with the latest security patches.
  • Monitor system logs for potential exploitation attempts.
  • Implement compensating controls, such as restricting access to sensitive areas of the system.

Evidence notes

The CVE-2026-62758 record indicates a heap-based buffer overflow in Windows Remote Access Connection Manager, which could allow an authorized attacker to elevate privileges locally. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. Multiple Windows versions and editions are affected, including Windows 10, Windows 11, and various Windows Server versions.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-62758 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-62758

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

  • CVE-2026-62758 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-62758

    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.