VMware ESXi OpenSLP Use-After-Free Vulnerability (CVE-2020-3992)
Severity: critical · Patch status: patched · Since 2021-11-03 · CVE-2020-3992
VMware ESXi OpenSLP contains a use-after-free vulnerability that allows an attacker residing in the management network with access to port 427 to perform remote code execution. CISA added CVE-2020-3992 to its Known Exploited Vulnerabilities catalog on Nov 3, 2021, which means attackers are exploiting it in the wild. CISA reports known use in ransomware campaigns.
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
All live incidents on Threat Watch
