{"id":"CVE-2020-3981","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-3981","generatedAt":"2026-10-27T21:21:10.293Z","title":"VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202008101-SG, 6.5 before ESXi650-202007101-SG), Workstation (15.x), Fusion (11.x before 11.5.6) contain an out-of-bounds read vulnerability due to a time-of-check time-of-use issue in…","description":"VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202008101-SG, 6.5 before ESXi650-202007101-SG), Workstation (15.x), Fusion (11.x before 11.5.6) contain an out-of-bounds read vulnerability due to a time-of-check time-of-use issue in ACPI device. A malicious actor with administrative access to a virtual machine may be able to exploit this issue to leak memory from the vmx process.","published":"2020-10-20T17:15:13.000Z","lastModified":"2026-06-17T03:19:23.000Z","status":"Modified","sourceIdentifier":"security@vmware.com","cvss":{"version":"3.1","score":5.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N"},"cwe":["CWE-125","CWE-367"],"affected":["vmware/cloud foundation","vmware/workstation","vmware/esxi","vmware/fusion"],"epss":{"score":0.00802,"percentile":0.56395,"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 (0.80%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.vmware.com/security/advisories/VMSA-2020-0023.html","tags":["Patch","Vendor Advisory"],"source":"security@vmware.com"},{"url":"https://www.vmware.com/security/advisories/VMSA-2020-0023.html","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-3981","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."}