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CVE-2023-20867

Low CVSS 3.9 Known exploited

Published 2023-06-13 · last changed 2026-06-17 · added to CISA KEV 2023-06-23

This one is being exploited in the wild.

CISA added CVE-2023-20867 to the Known Exploited Vulnerabilities catalog on 2023-06-23. Federal agencies are required to remediate it on a deadline. If you have affected machines, this is the class of finding that moves ahead of the rest of the queue.

The fix

We hold no Microsoft remediation data for CVE-2023-20867, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

A fully compromised ESXi host can force VMware Tools to fail to authenticate host-to-guest operations, impacting the confidentiality and integrity of the guest virtual machine.

Sources

CVSS vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N