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CVE-2026-62697 Microsoft CVE debrief

CVE-2026-62697 is a high-severity vulnerability in Windows Push Notifications that allows an authorized attacker to elevate privileges locally. The vulnerability has a CVSS score of 7.8 and is classified as CWE-416. Microsoft has released a patch for this vulnerability. Affected Windows systems require immediate patching to prevent local privilege escalation. Verify affected Windows versions and apply patches according to vendor guidance. Monitor for local privilege escalation attempts and review compensating controls for exposed systems.

Vendor
Microsoft
Product
Windows 10 Version 21H2
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-17
Advisory published
2026-09-08
Advisory updated
2026-09-17

Who should care

Windows system administrators and security teams should assess exposure and apply patches immediately. Affected operator and platform teams should review compensating controls for exposed systems while remediation is scheduled and verified. Vulnerability management and security teams should monitor for local privilege escalation attempts.

Why it matters

CVE-2026-62697 is a high-severity vulnerability in Windows Push Notifications that requires immediate patching to prevent local privilege escalation.

  • Local privilege escalation is possible
  • Patching is required to prevent exploitation
  • Verify affected Windows versions and apply patches

Technical summary

CVE-2026-62697 is a use-after-free vulnerability in Windows Push Notifications that allows an authorized attacker to elevate privileges locally. The vulnerability has a CVSS score of 7.8 and is classified as CWE-416. Affected Windows systems require immediate patching to prevent local privilege escalation. Verify affected Windows versions and apply patches according to vendor guidance.

Defensive priority

Apply patches immediately for Windows systems, especially those with high-risk exposure.

Recommended defensive actions

  • Apply patches for Windows Push Notifications
  • Verify and apply patches for affected Windows versions
  • Monitor for local privilege escalation attempts

Evidence notes

The vulnerability is described as a use-after-free issue in Windows Push Notifications. Microsoft has provided a patch for this vulnerability. The CVE record was published on 2026-09-08T18:17:52.523Z and has not been modified since then. Evidence is limited to official CVE Program and NIST NVD records. Defenders should verify affected Windows versions and apply patches according to vendor guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-62697 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-62697

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

  • CVE-2026-62697 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-62697

    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.