What is CVE-2026-71347?

CVE-2026-71347 is a medium-severity vulnerability in Microsoft Windows 11 Version 24h2, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.4/10. Published 2026-10-13.

How severe is CVE-2026-71347?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Use After Free in Microsoft Windows 11 Version 24h2

CVE-2026-71347

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Security Center allows an authorized attacker to elevate privileges locally.

Vulnerability class: Race Condition

Published 2026-10-13 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Windows Security Center Elevation of Privilege Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-71347?: CVE-2026-71347 is a medium-severity vulnerability in Microsoft Windows 11 Version 24h2, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.4/10. Published 2026-10-13.
How severe is CVE-2026-71347?: Medium severity. CVSS v3 base score is 6.4 out of 10.