{"id":"CVE-2026-103679","aliases":["DEBIAN-CVE-2026-103679","EUVD-2026-90772","GHSA-hh3v-7rq2-8fq9","UBUNTU-CVE-2026-103679"],"status":"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).","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00279,"percentile":0.20677,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2026-10-01T11:34:50Z","modified":"2026-10-28T02:30:47Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"tnef","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.18-3","1.4.18-4","1.4.18-5","1.4.18-6"]},{"source":"osv","ecosystem":"Debian:13","package":"tnef","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.18-4","1.4.18-5","1.4.18-6"]},{"source":"osv","ecosystem":"Debian:14","package":"tnef","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.18-4","1.4.18-5","1.4.18-6"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"tnef","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.9-1","1.4.9-1+deb8u2build0.16.04.1","1.4.9-1+deb8u3build0.16.04.1","1.4.9-1+deb8u4build0.16.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"tnef","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.12-1.2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"tnef","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.12-1.2","1.4.18-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"tnef","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.18-3"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"tnef","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.18-3"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"tnef","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.18-5build1","1.4.18-6"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"tnef","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.18-5","1.4.18-5build1"]}],"products":[{"vendor":"tnef_project","product":"tnef"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-103679","tags":["vdb-entry","x_refsource_REDHAT","Third Party Advisory","advisory","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2544477","tags":["issue-tracking","x_refsource_REDHAT","Issue Tracking","Third Party Advisory","report"]},{"url":"https://github.com/verdammelt/tnef","tags":["Product","package","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103679","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hh3v-7rq2-8fq9"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103679.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-103679","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-103679","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-103679","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-103679","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).","status":"published","published":"2026-10-01T11:34:50.12Z","modified":"2026-10-01T14:59:49.129Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T13:34:37.420074Z"}],"euvd":[{"id":"EUVD-2026-90772","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).","status":"published","published":"2026-10-01T11:34:50Z","modified":"2026-10-01T14:59:49Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T17:27:45.695512Z"}],"ghsa":[{"id":"GHSA-hh3v-7rq2-8fq9","title":"A flaw was found in tnef. A remote attacker could exploit this vulnerability by providing a...","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).","status":"published","published":"2026-10-01T12:31:20Z","modified":"2026-10-01T12:31:28Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:12:40.571849Z"}],"nvd":[{"id":"CVE-2026-103679","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).","status":"published","published":"2026-10-01T12:17:15.683Z","modified":"2026-10-05T14:05:23.933Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:12:53.41762Z"}],"osv":[{"id":"CVE-2026-103679","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).","status":"published","published":"2026-10-01T11:34:50.12Z","modified":"2026-10-28T02:30:47.54656713Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:44:54.236592Z"},{"id":"DEBIAN-CVE-2026-103679","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).","status":"published","published":"2026-10-01T12:17:15.683Z","modified":"2026-10-06T09:47:30.206500355Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:48.903138Z"},{"id":"UBUNTU-CVE-2026-103679","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).","status":"published","published":"2026-10-01T12:17:00Z","modified":"2026-10-17T12:57:59.898180037Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:55:59.130573Z"}]}}