CVE-2026-83504: microsoft windows_11_23h2, microsoft windows_11_24h2, microsoft windows_11_25h2

CVSS 4.7 (medium) · published 2026-10-13

Time-of-check time-of-use (toctou) race condition in Windows SmartScreen allows an authorized attacker to disclose information locally.

Affected products (NVD): microsoft windows_11_23h2, microsoft windows_11_24h2, microsoft windows_11_25h2, microsoft windows_11_26h1

Fixed in (NVD): 10.0.22631.7652, 10.0.26100.9711, 10.0.26200.9711, 10.0.28000.3231

Weakness: CWE-367

Source: NVD CVE-2026-83504

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83504

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