{"id":"CVE-2026-103679","state":"PUBLISHED","title":"Tnef: use-after-free and double-free in get_body_files() via multi-value body extraction","description":"A flaw was found in tnef. A remote attacker could exploit this vulnerability by providing a specially crafted Transport Neutral Encapsulation Format (TNEF) file containing multiple message bodies. During extraction, improper memory management triggers a use-after-free and double-free condition, causing the application to crash and resulting in a Denial of Service (DoS).","publishedAt":"2026-10-01T11:34:50.120Z","updatedAt":"2026-10-01T14:59:49.129Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","source":"fedora"},"assigner":"fedora","products":["tnef"],"affected":[{"packageName":"tnef","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.4.18","versionType":"semver"}],"collectionURL":"https://github.com/verdammelt/tnef"}],"references":["https://access.redhat.com/security/cve/CVE-2026-103679","https://bugzilla.redhat.com/show_bug.cgi?id=2544477","https://github.com/verdammelt/tnef"],"weaknesses":["CWE-416"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/103xxx/CVE-2026-103679.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-103679","state":"PUBLISHED","datePublished":"2026-10-01T11:34:50.120Z","dateUpdated":"2026-10-01T14:59:49.129Z","assignerShortName":"fedora","assignerOrgId":"92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5","dateReserved":"2026-10-01T09:06:43.923Z"},"containers":{"cna":{"title":"Tnef: use-after-free and double-free in get_body_files() via multi-value body extraction","descriptions":[{"lang":"en","value":"A flaw was found in tnef. A remote attacker could exploit this vulnerability by providing a specially crafted Transport Neutral Encapsulation Format (TNEF) file containing multiple message bodies. During extraction, improper memory management triggers a use-after-free and double-free condition, causing the application to crash and resulting in a Denial of Service (DoS)."}],"affected":[{"packageName":"tnef","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.4.18","versionType":"semver"}],"collectionURL":"https://github.com/verdammelt/tnef"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-103679","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2544477","name":"RHBZ#2544477","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://github.com/verdammelt/tnef"}],"metrics":[{"other":{"content":{"value":"Moderate","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","description":"Use After Free","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"fedora","orgId":"92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5","dateUpdated":"2026-10-01T11:34:50.120Z"},"datePublic":"2026-10-01T00:00:00.000Z","x_redhatCweChain":"CWE-416: Use After Free","timeline":[{"lang":"en","time":"2026-09-30T19:37:30.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-10-01T00:00:00.000Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank Julien Ahrens (RCE Security GmbH) for reporting this issue."}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-01T14:59:32.309151Z","id":"CVE-2026-103679","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-01T14:59:49.129Z"}}]}}}