CVE-2026-70116: microsoft windows_11_24h2, microsoft windows_11_25h2, microsoft windows_11_26h1

CVSS 4.2 (medium) · published 2026-10-13

Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to bypass a security feature with a physical attack.

Affected products (NVD): microsoft windows_11_24h2, microsoft windows_11_25h2, microsoft windows_11_26h1, microsoft windows_11_26h2, microsoft windows_server_2025

Fixed in (NVD): 10.0.26100.9711, 10.0.26200.9711, 10.0.28000.3231, 10.0.26300.9711, 10.0.26100.33650

Weakness: CWE-121

Source: NVD CVE-2026-70116

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70116

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