Actively exploited · Published Aug 12, 2021 · Assigned by microsoft
CVE-2021-36942Windows LSA Spoofing Vulnerability
High 7.5 Exploited Ransomware
In plain English
A high-severity security flaw in Windows Server 2008 R2 Service Pack 1 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on November 3, 2021). It has been used in ransomware campaigns. The chance it is exploited in the next 30 days is estimated at 66.0% (higher than 99.3% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit. Apply updates per vendor instructions.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)66.0%top 0.7% of all CVEs
Exploited in the wildYesCISA KEV since Nov 3, 2021
Attack tooling1Metasploit
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Nov 17, 2021.
Official description
Windows LSA Spoofing Vulnerability
Affected products (as reported)
References
- Windows LSA Spoofing Vulnerability vendor-advisory, patch
- VU#405600 third-party-advisory, x_refsource_CERT-VN, x_transferred
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36942 x_refsource_MISC, x_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36942 government-resource