{"id":"CVE-2021-2279","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-2279","generatedAt":"2026-10-28T00:31:04.581Z","title":"Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core).","description":"Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.20. Difficult to exploit vulnerability allows unauthenticated attacker with network access via RDP to compromise Oracle VM VirtualBox. Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).","published":"2021-04-22T22:15:16.000Z","lastModified":"2026-06-17T03:49:11.000Z","status":"Modified","sourceIdentifier":"secalert_us@oracle.com","cvss":{"version":"3.1","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["oracle/vm virtualbox"],"epss":{"score":0.0331,"percentile":0.88471,"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":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (3.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://security.gentoo.org/glsa/202208-36","tags":["Third Party Advisory"],"source":"secalert_us@oracle.com"},{"url":"https://www.oracle.com/security-alerts/cpuapr2021.html","tags":["Patch","Vendor Advisory"],"source":"secalert_us@oracle.com"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-453/","tags":["Third Party Advisory","VDB Entry"],"source":"secalert_us@oracle.com"},{"url":"https://security.gentoo.org/glsa/202208-36","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpuapr2021.html","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-453/","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-2279","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."}