{"id":"CVE-2020-2732","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-2732","generatedAt":"2026-10-28T01:51:11.490Z","title":"A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled.","description":"A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest.","published":"2020-04-08T22:15:12.000Z","lastModified":"2026-06-17T03:12:47.000Z","status":"Modified","sourceIdentifier":"secalert_us@oracle.com","cvss":{"version":"3.1","score":6.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"},"cwe":["CWE-200"],"affected":["redhat/enterprise linux"],"epss":{"score":0.00927,"percentile":0.60236,"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 (0.93%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1805135","tags":["Issue Tracking","Third Party Advisory"],"source":"secalert_us@oracle.com"},{"url":"https://git.kernel.org/linus/07721feee46b4b248402133228235318199b05ec","tags":["Patch","Third Party Advisory"],"source":"secalert_us@oracle.com"},{"url":"https://git.kernel.org/linus/35a571346a94fb93b5b3b6a599675ef3384bc75c","tags":["Patch","Third Party Advisory"],"source":"secalert_us@oracle.com"},{"url":"https://git.kernel.org/linus/e71237d3ff1abf9f3388337cfebf53b96df2020d","tags":["Patch","Third Party Advisory"],"source":"secalert_us@oracle.com"},{"url":"https://linux.oracle.com/errata/ELSA-2020-5540.html","tags":["Third Party Advisory"],"source":"secalert_us@oracle.com"},{"url":"https://linux.oracle.com/errata/ELSA-2020-5542.html","tags":["Third Party Advisory"],"source":"secalert_us@oracle.com"},{"url":"https://linux.oracle.com/errata/ELSA-2020-5543.html","tags":["Third Party Advisory"],"source":"secalert_us@oracle.com"},{"url":"https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html","source":"secalert_us@oracle.com"},{"url":"https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html","source":"secalert_us@oracle.com"},{"url":"https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html","source":"secalert_us@oracle.com"},{"url":"https://www.debian.org/security/2020/dsa-4667","source":"secalert_us@oracle.com"},{"url":"https://www.debian.org/security/2020/dsa-4698","source":"secalert_us@oracle.com"},{"url":"https://www.openwall.com/lists/oss-security/2020/02/25/3","tags":["Mailing List","Third Party Advisory"],"source":"secalert_us@oracle.com"},{"url":"https://www.spinics.net/lists/kvm/msg208259.html","tags":["Patch","Third Party Advisory"],"source":"secalert_us@oracle.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1805135","tags":["Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/linus/07721feee46b4b248402133228235318199b05ec","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/linus/35a571346a94fb93b5b3b6a599675ef3384bc75c","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/linus/e71237d3ff1abf9f3388337cfebf53b96df2020d","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://linux.oracle.com/errata/ELSA-2020-5540.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://linux.oracle.com/errata/ELSA-2020-5542.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://linux.oracle.com/errata/ELSA-2020-5543.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2020/dsa-4667","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2020/dsa-4698","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.openwall.com/lists/oss-security/2020/02/25/3","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.spinics.net/lists/kvm/msg208259.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-2732","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."}