{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-01T05:33:54.590","vulnerabilities":[{"cve":{"id":"CVE-2021-4158","sourceIdentifier":"secalert@redhat.com","published":"2022-08-24T16:15:09.660","lastModified":"2024-11-21T06:37:01.980","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition."},{"lang":"es","value":"Se ha encontrado un problema de desreferencia de puntero NULL en el código ACPI de QEMU. Un usuario malicioso y con privilegios dentro del huésped podía usar este fallo para bloquear el proceso de QEMU en el host, resultando en una situación de denegación de servicio."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","baseScore":6.0,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.5,"impactScore":4.0}]},"weaknesses":[{"source":"secalert@redhat.com","type":"Secondary","description":[{"lang":"en","value":"CWE-476"}]},{"source":"nvd@nist.gov","type":"Secondary","description":[{"lang":"en","value":"CWE-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0.0","versionEndExcluding":"7.0.0","matchCriteriaId":"9256E28E-727B-4C6F-96E3-F2D4EA5E4BB1"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*","matchCriteriaId":"7F6FB57C-2BC7-487C-96DD-132683AEB35D"}]}]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2021-4158","source":"secalert@redhat.com","tags":["Third Party Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2035002","source":"secalert@redhat.com","tags":["Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827e","source":"secalert@redhat.com","tags":["Patch","Third Party Advisory"]},{"url":"https://gitlab.com/qemu-project/qemu/-/issues/770","source":"secalert@redhat.com","tags":["Exploit","Third Party Advisory"]},{"url":"https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.html","source":"secalert@redhat.com","tags":["Patch","Third Party Advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-4158","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2035002","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827e","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://gitlab.com/qemu-project/qemu/-/issues/770","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"]},{"url":"https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]}]}}]}