ACTIVELY EXPLOITED
CVE-2023-20867: VMware Tools Authentication Bypass Vulnerability
| Vendor | VMware |
|---|---|
| Product | Tools |
| Actively exploited | Yes |
| Added to CISA KEV | 23 Jun 2023 |
| CISA federal deadline | 14 Jul 2023 |
| Weakness (CWE) | CWE-287 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
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.
SOURCES
Other VMware flaws
- CVE-2025-22226: VMware ESXi, Workstation, and Fusion Information Disclosure Vulnerability
- CVE-2025-22225: VMware ESXi Arbitrary Write Vulnerability
- CVE-2025-22224: VMware ESXi and Workstation TOCTOU Race Condition Vulnerability
- CVE-2024-38813: VMware vCenter Server Privilege Escalation Vulnerability
- CVE-2024-38812: VMware vCenter Server Heap-Based Buffer Overflow Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.