CVE-2025-21313
Windows Security Account Manager (SAM) Denial of Service Vulnerability
Windows Security Account Manager (SAM) Denial of Service Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Windows Security Account Manager (SAM) Denial of Service Vulnerability
Windows Security Account Manager (SAM) Denial of Service Vulnerability
- Record
CVE-2025-21313- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Weakness
- CWE-833
- Updated
- 2026-11-02
EUVDEUVD-2025-2378
Windows Security Account Manager (SAM) Denial of Service Vulnerability
- Record
EUVD-2025-2378- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-54qx-6c6v-96w4
Windows Security Account Manager (SAM) Denial of Service Vulnerability
Windows Security Account Manager (SAM) Denial of Service Vulnerability
- Record
GHSA-54qx-6c6v-96w4- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-833
- Updated
- 2026-11-02
NVD
Windows Security Account Manager (SAM) Denial of Service Vulnerability
- Record
CVE-2025-21313- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-833
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-21313 is a medium vulnerability (CVSS 6.5) in Microsoft Windows 11 Version 24h2, published January 14, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.74%, the 77th percentile. No source names a fixed version.