Actively exploited · Published Aug 12, 2021 · Assigned by microsoft
CVE-2021-34484Windows User Profile Service Elevation of Privilege Vulnerability
High 7.8 Exploited
In plain English
A high-severity security flaw in Windows 10 Version 1507 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on March 31, 2022). The chance it is exploited in the next 30 days is estimated at 21.8% (higher than 98% of all known vulnerabilities). Apply updates per vendor instructions.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)21.8%top 2.3% of all CVEs
Exploited in the wildYesCISA KEV since Mar 31, 2022
Attack toolingNoneno public tooling known
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Apr 21, 2022.
Official description
Windows User Profile Service Elevation of Privilege Vulnerability
Affected products (as reported)
References
- Windows User Profile Service Elevation of Privilege Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34484 x_refsource_MISC, x_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-34484 government-resource