Actively exploited · Published Nov 10, 2021 · Assigned by microsoft
CVE-2021-41379Windows Installer Elevation of Privilege Vulnerability
Medium 5.5 Exploited Ransomware
In plain English
A medium-severity security flaw in Windows 10 Version 1507 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on March 3, 2022). It has been used in ransomware campaigns. The chance it is exploited in the next 30 days is estimated at 19.5% (higher than 97% of all known vulnerabilities). Apply updates per vendor instructions.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)19.5%top 2.6% of all CVEs
Exploited in the wildYesCISA KEV since Mar 3, 2022
Attack toolingNoneno public tooling known
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Mar 17, 2022.
Official description
Windows Installer Elevation of Privilege Vulnerability
Affected products (as reported)
Weakness: CWE-59 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
References
- Windows Installer Elevation of Privilege Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41379 x_refsource_MISC, x_transferred
- https://www.zerodayinitiative.com/advisories/ZDI-21-1308/ x_refsource_MISC, x_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-41379 government-resource