{"id":"CVE-2026-118384","aliases":["AZL-111176","BELL-CVE-2026-118384","DEBIAN-CVE-2026-118384","EUVD-2026-111572","GHSA-9h57-5h59-g528","OESA-2026-4676","OESA-2026-4677","OESA-2026-4678","OESA-2026-4751","UBUNTU-CVE-2026-118384"],"status":"published","title":"GNU mtools through 4.0.49 has an out-of-bounds write in parse_vses in vfat.c.","description":"GNU mtools before 4.0.50 has an out-of-bounds write in parse_vses in 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Linux:3","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.0.43-2"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.39-r0"},{"fixed":"4.0.50-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.33-1+really4.0.32-1","4.0.33-1+really4.0.32-1+hurd.1","4.0.43-1","4.0.47-1","4.0.48-1","4.0.48-2","4.0.49-1"]},{"source":"osv","ecosystem":"Debian:13","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.48-1","4.0.48-2","4.0.49-1"]},{"source":"osv","ecosystem":"Debian:14","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.48-1","4.0.48-2","4.0.49-1"]},{"source":"osv","ecosystem":"openEuler:22.03-LTS-SP4","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.35-3.oe2203sp4"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP1","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.43-3.oe2403sp1"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP3","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.43-3.oe2403sp3"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP4","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.43-3.oe2403sp4"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.18-2","4.0.18-2ubuntu0.16.04"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.18-2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.23-1","4.0.23-2","4.0.23-3","4.0.24-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.33-1+really4.0.32-1","4.0.33-1+really4.0.32-1build1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.43-1","4.0.43-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.49-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"mtools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.48-1","4.0.49-1"]}],"products":[{"vendor":"gnu","product":"mtools"}],"references":[{"url":"https://github.com/deepin-community/mtools/blob/16d295331a1cfbcf02ad0b2f03c9b906197cf3ee/vfat.c#L444-L445","tags":["product","report"]},{"url":"https://github.com/deepin-community/mtools/blob/16d295331a1cfbcf02ad0b2f03c9b906197cf3ee/vfat.c#L399","tags":["product","report"]},{"url":"https://lists.gnu.org/archive/html/info-mtools/2026-10/msg00002.html"},{"url":"https://lists.gnu.org/archive/html/info-mtools/2026-10/msg00004.html"},{"url":"https://lists.gnu.org/archive/html/info-mtools/2026-10/msg00001.html"},{"url":"http://www.openwall.com/lists/oss-security/2026/10/31/1"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118384","tags":["web","advisory"]},{"url":"https://ftp.gnu.org/gnu/mtools/mtools-4.0.49.tar.gz","tags":["report"]},{"url":"https://lists.gnu.org/archive/html/info-gnu/2025-06/msg00004.html","tags":["report"]},{"url":"https://github.com/advisories/GHSA-9h57-5h59-g528"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-118384","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-118384","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4676","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4677","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4678","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4751","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-118384","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-118384","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-118384","description":"GNU mtools before 4.0.50 has an out-of-bounds write in parse_vses in vfat.c.","status":"published","published":"2026-10-28T02:53:38.786Z","modified":"2026-11-02T17:10:04.07Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-839"],"updated_at":"2026-11-02T19:02:29.283836Z"}],"euvd":[{"id":"EUVD-2026-111572","description":"GNU mtools before 4.0.50 has an out-of-bounds write in parse_vses in vfat.c.","status":"published","published":"2026-10-28T02:53:38Z","modified":"2026-11-02T17:10:04Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","level":"medium"}],"updated_at":"2026-11-03T05:08:39.764975Z"}],"ghsa":[{"id":"GHSA-9h57-5h59-g528","title":"GNU mtools through 4.0.49 has an out-of-bounds write in parse_vses in vfat.c.","description":"GNU mtools through 4.0.49 has an out-of-bounds write in parse_vses in vfat.c.","status":"published","published":"2026-10-28T03:31:52Z","modified":"2026-10-31T18:30:22Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","level":"medium"}],"cwes":["CWE-839"],"updated_at":"2026-11-02T15:14:54.535223Z"}],"nvd":[{"id":"CVE-2026-118384","description":"GNU mtools before 4.0.50 has an out-of-bounds write in parse_vses in vfat.c.","status":"published","published":"2026-10-28T03:17:14.757Z","modified":"2026-11-09T20:10:00.2Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-839"],"updated_at":"2026-11-09T22:15:53.091765Z"}],"osv":[{"id":"BELL-CVE-2026-118384","status":"published","published":"2026-10-30T06:06:40.73871Z","modified":"2026-11-05T07:15:02.453625486Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","level":"medium"}],"updated_at":"2026-11-05T09:09:18.578663Z"},{"id":"DEBIAN-CVE-2026-118384","description":"GNU mtools before 4.0.50 has an out-of-bounds write in parse_vses in vfat.c.","status":"published","published":"2026-10-28T03:17:14.757Z","modified":"2026-11-10T09:47:44.628215968Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","level":"medium"}],"updated_at":"2026-11-10T10:26:30.347596Z"},{"id":"OESA-2026-4676","title":"mtools security update","description":"Mtools is a collection of utilities to access MS-DOS disks from GNU and Unix without mounting them. It supports Win\u0026amp;apos;95 style long file names, OS/2 Xdf disks and 2m disks (store up to 1992k on a high density 3 1/2 disk) In addition to file access, it supports many FAT-specific features: volume labels, FAT-specific file attributes (hidden, system, ...), \u0026amp;quot;bad block\u0026amp;quot; map maintenance, access to remote floppy drives, Iomega ZIP disk protection, \u0026amp;quot;secure\u0026amp;quot; erase, display of file\u0026amp;apos;s on-disk layout, etc\r\n\r\nSecurity Fix(es):\n\nGNU mtools before 4.0.50 has an out-of-bounds write in parse_vses in vfat.c.(CVE-2026-118384)","status":"published","published":"2026-11-04T13:54:23Z","modified":"2026-11-04T14:00:04.827674249Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","level":"medium"}],"updated_at":"2026-11-04T14:10:46.921518Z"},{"id":"OESA-2026-4677","title":"mtools security update","description":"Mtools is a collection of utilities to access MS-DOS disks from GNU and Unix without mounting them. 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It supports Win\u0026amp;apos;95 style long file names, OS/2 Xdf disks and 2m disks (store up to 1992k on a high density 3 1/2 disk) In addition to file access, it supports many FAT-specific features: volume labels, FAT-specific file attributes (hidden, system, ...), \u0026amp;quot;bad block\u0026amp;quot; map maintenance, access to remote floppy drives, Iomega ZIP disk protection, \u0026amp;quot;secure\u0026amp;quot; erase, display of file\u0026amp;apos;s on-disk layout, etc\r\n\r\nSecurity Fix(es):\n\nGNU mtools before 4.0.50 has an out-of-bounds write in parse_vses in vfat.c.(CVE-2026-118384)","status":"published","published":"2026-11-04T13:54:24Z","modified":"2026-11-04T14:00:03.061747515Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","level":"medium"}],"updated_at":"2026-11-04T14:10:48.853413Z"},{"id":"OESA-2026-4751","title":"mtools security update","description":"Mtools is a collection of utilities to access MS-DOS disks from GNU and Unix without mounting them. It supports Win\u0026amp;apos;95 style long file names, OS/2 Xdf disks and 2m disks (store up to 1992k on a high density 3 1/2 disk) In addition to file access, it supports many FAT-specific features: volume labels, FAT-specific file attributes (hidden, system, ...), \u0026amp;quot;bad block\u0026amp;quot; map maintenance, access to remote floppy drives, Iomega ZIP disk protection, \u0026amp;quot;secure\u0026amp;quot; erase, display of file\u0026amp;apos;s on-disk layout, etc\r\n\r\nSecurity Fix(es):\n\nGNU mtools before 4.0.50 has an out-of-bounds write in parse_vses in vfat.c.(CVE-2026-118384)","status":"published","published":"2026-11-11T12:25:48Z","modified":"2026-11-11T12:45:06.216142795Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","level":"medium"}],"updated_at":"2026-11-11T13:08:46.301371Z"},{"id":"UBUNTU-CVE-2026-118384","description":"GNU mtools before 4.0.50 has an out-of-bounds write in parse_vses in vfat.c.","status":"published","published":"2026-10-28T03:17:00Z","modified":"2026-11-05T11:46:05.437312284Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","level":"medium"}],"updated_at":"2026-11-05T13:30:15.321876Z"},{"id":"AZL-111176","title":"CVE-2026-118384 affecting package mtools 4.0.43-2","description":"GNU mtools before 4.0.50 has an out-of-bounds write in parse_vses in vfat.c.","status":"published","published":"2026-10-28T03:17:14Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:18.705965Z"}]}}