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CVE-2026-69725 Microsoft CVE debrief

A double free vulnerability in Windows Hello allows an authorized attacker to elevate privileges locally. This CVE was published on 2026-09-08T18:19:44.720Z and was last modified on 2026-09-22T20:06:47.237Z. The NVD entry is currently Analyzed. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. The affected systems include Windows 10 Version 21H2, Windows 10 Version 22H2, Windows 11 Version 23H2, Windows 11 Version 24H2, and Windows 11 Version 25H2. Defenders responsible for Windows 10 and Windows 11 systems, especially those with elevated privileges, should assess exposure and apply patches provided by Microsoft. The CVE record and NVD detail page and 3

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
2026-09-22
Advisory published
2026-09-08
Advisory updated
2026-09-22

Who should care

Defenders responsible for Windows 10 and Windows 11 systems, especially those with elevated privileges, should assess exposure and apply patches provided by Microsoft.

Why it matters

The CVE-2026-69725 vulnerability allows an authorized attacker to elevate privileges locally, posing a significant risk to Windows 10 and Windows 11 systems. Defenders should prioritize verifying exposure and applying patches provided by Microsoft.

  • Verify exposure and apply patches for Windows 10 and Windows 11 systems.
  • Monitor systems for potential privilege elevation attacks.
  • Review and update incident response plans to address potential exploitation.
  • Assess and mitigate potential risks associated with elevated privileges.

Technical summary

The CVE-2026-69725 vulnerability is a double free issue in Windows Hello that allows an authorized attacker to elevate privileges locally. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. The affected systems include Windows 10 Version 21H2, Windows 10 Version 22H2, Windows 11 Version 23H2, Windows 11 Version 24H2, and Windows 11 Version 25H2.

Defensive priority

Defenders should prioritize verifying exposure and applying patches for Windows 10 and Windows 11 systems, especially those with elevated privileges.

Recommended defensive actions

  • Verify exposure by checking Windows 10 and Windows 11 systems for vulnerable versions.
  • Apply patches provided by Microsoft for the affected systems.
  • Monitor systems for potential privilege elevation attacks.
  • Review and update incident response plans to address potential exploitation.

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, including its CVSS score and vector. Microsoft has provided a vendor advisory and patch for the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-69725 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-69725

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

  • CVE-2026-69725 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-69725

    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.