{"id":"CVE-2020-3963","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-3963","generatedAt":"2026-10-28T00:32:08.244Z","title":"VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202006401-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.2), and Fusion (11.x before 11.5.2) contain a use-after-free vulnerability in PVNVRAM.","description":"VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202006401-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.2), and Fusion (11.x before 11.5.2) contain a use-after-free vulnerability in PVNVRAM. A malicious actor with local access to a virtual machine may be able to read privileged information contained in physical memory.","published":"2020-06-25T15:15:11.000Z","lastModified":"2026-06-17T03:19:21.000Z","status":"Modified","sourceIdentifier":"security@vmware.com","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-416"],"affected":["vmware/cloud foundation","vmware/fusion","vmware/workstation","vmware/esxi"],"epss":{"score":0.0055,"percentile":0.45766,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.55%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/158459/VMware-ESXi-Use-After-Free-Out-Of-Bounds-Access.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"security@vmware.com"},{"url":"http://seclists.org/fulldisclosure/2020/Jul/22","tags":["Exploit","Mailing List","Third Party Advisory"],"source":"security@vmware.com"},{"url":"https://www.vmware.com/security/advisories/VMSA-2020-0015.html","tags":["Vendor Advisory"],"source":"security@vmware.com"},{"url":"http://packetstormsecurity.com/files/158459/VMware-ESXi-Use-After-Free-Out-Of-Bounds-Access.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2020/Jul/22","tags":["Exploit","Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.vmware.com/security/advisories/VMSA-2020-0015.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-3963","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."}