Vulnerability in Microsoft Defender For Endpoint
CVE-2025-59497
Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Linux allows an authorized attacker to deny service locally.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (9.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 9.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Microsoft Defender For Endpoint
- Microsoft Defender For Endpoint Linux — versions 101.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59497 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-59497?
- CVE-2025-59497 is a high-severity vulnerability in Microsoft Defender For Endpoint, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.0/10. Published 2025-10-14.
- How severe is CVE-2025-59497?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2025-59497 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.