# CVE-2023-20867: VMware Tools Authentication Bypass Vulnerability

> CVE-2023-20867: VMware Tools Authentication Bypass Vulnerability. CVSS 3.9 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2023-20867
Last updated: 2025-10-21T23:05:46Z

- Published: 2023-06-13 16:47 UTC · Updated: 2025-10-21 23:05 UTC · Assigner: vmware
- CVSS: 3.9 (CVSS 3.1) · Severity: Low · Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
- EPSS: 13.6%, 96th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2023-06-23, federal due date 2023-07-14, ransomware use: Unknown
- CWE: CWE-287

## Description

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.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- VMware: VMware Tools

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-20867)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2023-20867)
- [https://lists.debian.org/debian-lts-announce/2023/08/msg00020.html](https://lists.debian.org/debian-lts-announce/2023/08/msg00020.html)
- [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NVKQ6Y2JFJRWPFOZUOTFO3H27BK5GGOG/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NVKQ6Y2JFJRWPFOZUOTFO3H27BK5GGOG/)
- [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJNJMD67QIT6LXLKWSHFM47DCLRSMT6W/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJNJMD67QIT6LXLKWSHFM47DCLRSMT6W/)
- [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZJM6HDRQYS74JA7YNKQBFH2XSZ52HEWH/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZJM6HDRQYS74JA7YNKQBFH2XSZ52HEWH/)
- [https://security.netapp.com/advisory/ntap-20230725-0001/](https://security.netapp.com/advisory/ntap-20230725-0001/)
- [https://www.debian.org/security/2023/dsa-5493](https://www.debian.org/security/2023/dsa-5493)
- [https://www.vmware.com/security/advisories/VMSA-2023-0013.html](https://www.vmware.com/security/advisories/VMSA-2023-0013.html)
- [http://www.openwall.com/lists/oss-security/2023/10/16/11](http://www.openwall.com/lists/oss-security/2023/10/16/11)
- [http://www.openwall.com/lists/oss-security/2023/10/16/2](http://www.openwall.com/lists/oss-security/2023/10/16/2)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2023-20867 · Markdown: https://rewindex.com/cve/CVE-2023-20867.md · JSON: https://rewindex.com/api/v1/cves/CVE-2023-20867 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:10:48.734Z