{"id":"CVE-2023-20867","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-20867","generatedAt":"2026-10-31T11:46:12.348Z","title":"VMware Tools Authentication Bypass Vulnerability","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.","published":"2023-06-13T17:15:14.000Z","lastModified":"2026-06-17T05:31:03.000Z","status":"Analyzed","sourceIdentifier":"security@vmware.com","cvss":{"version":"3.1","score":3.9,"severity":"LOW","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N"},"cwe":["CWE-287"],"affected":["vmware/tools","debian/debian linux","fedoraproject/fedora"],"epss":{"score":0.13638,"percentile":0.96477,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2023-06-23","dueDate":"2023-07-14","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nhttps://www.vmware.com/security/advisories/VMSA-2023-0013.html;  https://nvd.nist.gov/vuln/detail/CVE-2023-20867"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 14 July 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://www.openwall.com/lists/oss-security/2023/10/16/11","tags":["Mailing List","Patch"],"source":"security@vmware.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/16/2","tags":["Mailing List","Patch"],"source":"security@vmware.com"},{"url":"https://lists.debian.org/debian-lts-announce/2023/08/msg00020.html","tags":["Mailing List","Third Party Advisory"],"source":"security@vmware.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NVKQ6Y2JFJRWPFOZUOTFO3H27BK5GGOG/","tags":["Mailing List","Release Notes"],"source":"security@vmware.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJNJMD67QIT6LXLKWSHFM47DCLRSMT6W/","tags":["Mailing List","Release Notes"],"source":"security@vmware.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZJM6HDRQYS74JA7YNKQBFH2XSZ52HEWH/","tags":["Mailing List","Release Notes"],"source":"security@vmware.com"},{"url":"https://security.netapp.com/advisory/ntap-20230725-0001/","tags":["Third Party Advisory"],"source":"security@vmware.com"},{"url":"https://www.debian.org/security/2023/dsa-5493","tags":["Mailing List","Third Party Advisory"],"source":"security@vmware.com"},{"url":"https://www.vmware.com/security/advisories/VMSA-2023-0013.html","tags":["Patch","Vendor Advisory"],"source":"security@vmware.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/16/11","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/16/2","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2023/08/msg00020.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NVKQ6Y2JFJRWPFOZUOTFO3H27BK5GGOG/","tags":["Mailing List","Release Notes"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJNJMD67QIT6LXLKWSHFM47DCLRSMT6W/","tags":["Mailing List","Release Notes"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZJM6HDRQYS74JA7YNKQBFH2XSZ52HEWH/","tags":["Mailing List","Release Notes"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20230725-0001/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2023/dsa-5493","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.vmware.com/security/advisories/VMSA-2023-0013.html","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-20867","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-20867","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}