CVE-2023-20867
VMware Tools Authentication Bypass Vulnerability
IN CISA KEV
VMware Tools contains an authentication bypass vulnerability in the vgauth module. 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. An attacker must have root access over ESXi to exploit this vulnerability.
- Vendor
- VMware
- Product
- Tools
- CVSS
- No score recorded (no NVD record loaded for this entry)
- CWE
- CWE-287
- Published
- Not recorded
- NVD modified
- Not recorded
CISA KEV
- Date added
- 2023-06-23
- Due date
- 2023-07-14
- Ransomware use
- Unknown
- Required action
- Apply updates per vendor instructions.
EPSS
13.5% chance of exploitation in the next 30 days (percentile 96th)
FIRST EPSS, updated 17 Oct 2026. About EPSS
CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.
Data last updated 18 Oct 2026. Sources: NVD API 2.0, CISA KEV catalog, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.