Snapshot of public data from 31 Oct 2026, 12:50:06. This data is not updated until the API is deployed.

TACTICThreat Analysis & Cyber Threat Intelligence Center
System themeFrançais

Back to the watch

CVE-2020-3992

VMware ESXi OpenSLP Use-After-Free Vulnerability

UrgentCVSS 9.8 v3.1Exploited

Why this priority

?

Generic watch priority computed by public, versioned rules. It does not know your assets. See the glossary

  • Présent dans le catalogue CISA KEV (exploitation confirmée)

Description

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.

Affected products

VendorProductVersions
VMwareESXiAll versions
n/aVMware ESXi
  • VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-202010401-SG)

Revision history

  1. Revision 3

  2. Revision 2

    Update : Affected versions changed

  3. Revision 1

    New record

Qualification

CVSS severity
?

Technical severity score between 0 and 10, with its version (3.1, 4.0). See the glossary

9.8 CRITICAL CVSS v3.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
KEV catalog
?

CISA catalog of vulnerabilities with confirmed exploitation. Absence from the catalog does not prove absence of exploitation. See the glossary

Listed
Exploitation
Confirmed
EPSS probability
?

Probability, between 0 and 1, that a vulnerability is exploited in the next 30 days, published daily by FIRST. Always dated. See the glossary

Unknown
Confidence
?

Quality of the sources behind the record. It is not a risk score. See the glossary

High

Priority rules, version 1

CISA KEV catalog

Added on
3 November 2021
Federal due date
3 May 2022
Required action
Apply updates per vendor instructions.
Ransomware use
Known

Record

Published on
20 October 2020
Weaknesses (CWE)
CWE-416

Sources

References

CVE-2020-3992 VMware ESXi OpenSLP Use-After-Free Vulnerability · Avanguard TACTIC