Time-of-check Time-of-use (TOCTOU) Race Condition in Defender for Endpoint for Linux - CVE-2025-59497
Published: October 14, 2025
Vulnerability identifier: #VU117083
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-59497
CWE-ID: CWE-367
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a time-of-check, time-of-use (TOCTOU) race condition in Microsoft Defender for Linux. A local user can win a race condition and cause a denial of service condition on the target system.
Affected software
Defender for Endpoint for Linux
How to mitigate CVE-2025-59497
Install updates from vendor's website.