CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

CVE-2020-3992: VMware ESXi OpenSLP Use-After-Free Vulnerability

criticalknown exploitedpublic exploitCVE-2020-3992
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: VMwareproduct: ESXiRemote code execution
What
A use-after-free vulnerability allows an attacker with access to port 427 to perform remote code execution.
Who is affected
Users of VMware ESXi with the vulnerable version.
Urgency
Remediation is critical due to active exploitation and high severity.
Action
Update to the latest version of VMware ESXi.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch ESXi

Get an email when a new ESXi advisory drops — max one per day, one-click unsubscribe.

Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2020-3992

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2020-3992coverage & exploitation statusNVD · CVE.org

Recent advisories for VMware ESXi OpenSLP

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CISA Known Exploited Vulnerabilities