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CVE-2026-62737 Microsoft CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-11T17:04:15.596Z and has not been modified since then. The NVD entry is currently not provided. This high-severity elevation of privilege vulnerability in the Windows Kernel, tracked as CVE-2026-62737, allows an authorized attacker to elevate privileges locally through an untrusted pointer dereference. Affected versions include Windows 11 Version 24H2, 25H2, 26H1, and Windows Server 2025. The vulnerability's impact involves potential local privilege elevation, emphasizing the need for defenders to verify exposure, especially in environments where local privilege elevation is

Vendor
Microsoft
Product
Windows 11 Version 24H2
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-11
Original CVE updated
2026-10-08
Advisory published
2026-08-11
Advisory updated
2026-10-08

Who should care

Defenders responsible for Windows 11 and Windows Server 2025 systems, especially those concerned with local privilege elevation vulnerabilities, should assess exposure and implement necessary patches or compensating controls.

Why it matters

CVE-2026-62737 is a high-severity elevation of privilege vulnerability in the Windows Kernel. Defenders should verify exposure, especially in environments where local privilege elevation is a concern, and implement necessary patches or compensating controls.

  • Verification of system configurations and patch levels is necessary to prevent local privilege elevation.
  • Defenders need to assess exposure in Windows 11 and Windows Server 2025 environments.
  • Implementation of compensating controls to limit local access may be required.
  • Monitoring for updates from Microsoft is crucial for staying informed about this vulnerability.

Technical summary

The CVE-2026-62737 vulnerability involves an untrusted pointer dereference in the Windows Kernel, allowing an authorized attacker to elevate privileges locally. Affected versions include Windows 11 Version 24H2, 25H2, 26H1, and Windows Server 2025. Patch information is available from Microsoft.

Defensive priority

Defenders should prioritize verifying exposure in Windows 11 and Windows Server 2025 environments, especially where local privilege elevation is a concern.

Recommended defensive actions

  • Verify system configurations and patch levels for Windows 11 Version 24H2, 25H2, 26H1, and Windows Server 2025
  • Assess local privilege elevation risks in environments where untrusted pointers could be exploited
  • Implement compensating controls to limit local access to sensitive systems
  • Monitor for updates from Microsoft regarding this vulnerability

Evidence notes

The CVE record and source item provide details on the vulnerability but do not offer specific exploitation or impact evidence. Affected versions and patches are noted, but verification is required.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-62737 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-62737

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

  • CVE-2026-62737 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-62737

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Windows Kernel Elevation of Privilege Vulnerability

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/62xxx/CVE-2026-62737.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62737

    Supplemental source - vendor-advisory, patch

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.