CVE-2020-3992

critical VMware ⚠️ CISA KEV — Exploited in the Wild
CVSS v3 Base Score
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
83.0%
Exploitation probability in 30 days
Top 0% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: October 20, 2020 (2148 days ago)
Last Modified: August 12, 2026
Vendor: VMware
Source: NVD

⚠️ CISA Known Exploited Vulnerability

Added to KEV: 2021-11-03
Remediation Due: 2022-05-03 (⚠ 1589d overdue)
Ransomware Campaign: Known

Description

OpenSLP as used in VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-202010401-SG) has a use-after-free issue. A malicious actor residing in the management network who has access to port 427 on an ESXi machine may be able to trigger a use-after-free in the OpenSLP service resulting in remote code execution.

CWE

CWE-416

Affected Products

vmware cloud foundationvmware esxi

References

🔗 www.vmware.com 🔗 www.zerodayinitiative.com 🔗 www.zerodayinitiative.com 🔗 www.vmware.com 🔗 www.zerodayinitiative.com