CVE-2025-21191
Time-of-check time-of-use (toctou) race condition in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally.
Scoring
- Severity
- HIGH
- CVSS base score
- 7
- 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
- EPSS probability
- 0.32%
- CWE
- CWE-367
- Published
- 2025-04-08
- Last modified
- 2026-08-10
Affected products
- Microsoft Windows 10 Version 1507
- Microsoft Windows 10 Version 1607
- Microsoft Windows 10 Version 1809
- Microsoft Windows 10 Version 21H2
- Microsoft Windows 10 Version 22H2
- Microsoft Windows 11 version 22H2
- Microsoft Windows 11 version 22H3
- Microsoft Windows 11 Version 23H2
Weakness type
Related vulnerabilities
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- CVE-2026-79071 — Race condition in GPU in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer
- CVE-2026-87554 — Race condition in Chromoting in Google Chrome on on Windows prior to 153.0.8010.36 allowed a local attacker to execute a
- CVE-2026-87457 — Race condition in Updater in Google Chrome on on Windows prior to 153.0.8010.36 allowed a local attacker to execute arbi
- CVE-2026-79263 — Race condition in Extensions in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code
- CVE-2026-79057 — Race condition in Start in Google Chrome on on Android prior to 152.0.7977.65 allowed a local attacker leveraging social
- CVE-2026-65183 — Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets