CVEvulnerability

CVE-2020-3992

9.8 CRITICAL Known exploited Published 2020-10-20 Modified 2026-08-12 Official page ↗

CISA Known Exploited Vulnerability

VMware ESXi OpenSLP Use-After-Free Vulnerability — VMware ESXi

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.

Added to KEV
2021-11-03
Remediation due
2022-05-03
Ransomware use
Known
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2020-3992
Status
Analyzed
Published
2020-10-20
Last modified
2026-08-12
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-416

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.

Affected configurations

• vmware cloud foundation (>= 3.0 < 3.10.1.2) • vmware cloud foundation (>= 4.0 < 4.1.0.1) • vmware esxi 6.5 • vmware esxi 6.7 • vmware esxi 7.0.0

Related

Weakness · CWE (1)

References