CVE-2025-21191

HIGH EPSS 20.7%
Published Apr 8, 20251y ago · Modified Jun 17, 20262w ago
7.0 CVSS 3.1
High
Find Similar
Published Apr 8, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

Time-of-check time-of-use (toctou) race condition in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally.

CVSS Details

Base Score
7.0
Exploitability
1.0
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
20.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-367

Affected Products 21

VendorProductVersionRange
microsoftwindows_10_1507* <10.0.10240.20978
microsoftwindows_10_1507* <10.0.10240.20978
microsoftwindows_10_1607* <10.0.14393.7969
microsoftwindows_10_1607* <10.0.14393.7969
microsoftwindows_10_1809* <10.0.17763.7136
microsoftwindows_10_1809* <10.0.17763.7136
microsoftwindows_10_21h2* <10.0.19044.5737
microsoftwindows_10_22h2* <10.0.19045.5737
microsoftwindows_11_22h2* <10.0.22621.5189
microsoftwindows_11_23h2* <10.0.22631.5189
microsoftwindows_11_24h2* <10.0.26100.3775
microsoftwindows_server_2008*any
microsoftwindows_server_2008*any
microsoftwindows_server_2008r2any
microsoftwindows_server_2012*any
microsoftwindows_server_2012r2any
microsoftwindows_server_2016* <10.0.14393.7969
microsoftwindows_server_2019* <10.0.17763.7136
microsoftwindows_server_2022* <10.0.20348.3453
microsoftwindows_server_2022_23h2* <10.0.25398.1551
microsoftwindows_server_2025* <10.0.26100.3775

References 1

  • msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21191
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.