Microsoft Win32k Privilege Escalation Vulnerability (CVE-2020-1054)
Severity: high · Patch status: patched · Since 2021-11-03 · CVE-2020-1054
Microsoft Win32k contains a privilege escalation vulnerability when the Windows kernel-mode driver fails to properly handle objects in memory. Successful exploitation allows an attacker to execute code in kernel mode. CISA added CVE-2020-1054 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 May 3, 2022 (BOD 22-01); treat that as the outer limit.
Sources
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