CVE-2025-59497 HIGH

CVE-2025-59497: Microsoft Defender for Linux Denial of Service Vulnerability

Vendor Microsoft
Product Microsoft Defender for Endpoint for Linux
Weakness CWE-367
Published October 14, 2025
Last update February 22, 2026
View on NVD All CVEs

CVSS base score

7.0/10
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

What the vulnerability does

01Description

Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Linux allows an authorized attacker to deny service locally.

Key dates

02Disclosure timeline

October 14, 2025 CVE published
February 22, 2026 Record updated