Microsoft Windows Kernel Information Disclosure Vulnerability (CVE-2021-31955)
Severity: medium · Patch status: patched · Since 2021-11-03 · CVE-2021-31955
Microsoft Windows Kernel contains an unspecified vulnerability that allows for information disclosure. Successful exploitation allows attackers to read the contents of kernel memory from a user-mode process. CISA added CVE-2021-31955 to its Known Exploited Vulnerabilities catalog on Nov 3, 2021, which means attackers are exploiting it in the wild.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Nov 17, 2021 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
