{"id":"CVE-2026-88340","aliases":["DEBIAN-CVE-2026-88340","EUVD-2026-84849","GHSA-f27p-cq5g-fr5x","UBUNTU-CVE-2026-88340"],"status":"published","title":"An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled ...","description":"An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild pointer access in yr_object_create(). An attacker can provide a specially crafted .yrc file that causes memory corruption and application crash.","severity":{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.0025,"percentile":0.16457,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-763"],"published":"2026-09-22T00:00:00Z","modified":"2026-10-17T13:01:15Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.3-4","4.3.0-1","4.3.2-1","4.4.0-1","4.5.0-1","4.5.0-1~bpo12+1","4.5.1-1","4.5.1-1~bpo12+1","4.5.2-1","4.5.2-1~bpo12+1","4.5.3-1","4.5.4-1","4.5.5-1","4.5.6-1","4.5.7-1","4.5.8-1"]},{"source":"osv","ecosystem":"Debian:13","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.2-1","4.5.3-1","4.5.4-1","4.5.5-1","4.5.6-1","4.5.7-1","4.5.8-1"]},{"source":"osv","ecosystem":"Debian:14","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.2-1","4.5.3-1","4.5.4-1","4.5.5-1","4.5.6-1","4.5.7-1","4.5.8-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.0+dfsg-2","3.4.0+dfsg-2build1","3.4.0+dfsg-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.3+dfsg-1ubuntu1","3.7.1-1ubuntu1","3.7.1-1ubuntu2","3.7.1-1ubuntu2+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.9.0-1","3.9.0-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.0-1","4.1.3-1","4.1.3-1build1","4.1.3-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.2-1","4.4.0-1","4.5.0-1","4.5.0-1build1","4.5.0-1build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.5-1","4.5.7-1","4.5.8-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.4-1","4.5.5-1"]}],"references":[{"url":"https://github.com/VirusTotal/yara/issues/2239","tags":["report"]},{"url":"https://github.com/VirusTotal/yara/pull/2244","tags":["report"]},{"url":"https://github.com/VirusTotal/yara/pull/2244/changes/8d7bef643ee5fa2381e235bcedf80170a6b00d3b","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88340"},{"url":"https://github.com/advisories/GHSA-f27p-cq5g-fr5x"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-88340","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-88340","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88340","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-88340","description":"An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild pointer access in yr_object_create(). An attacker can provide a specially crafted .yrc file that causes memory corruption and application crash.","status":"published","published":"2026-09-22T00:00:00Z","modified":"2026-09-25T19:47:47.785Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-763"],"updated_at":"2026-11-02T13:42:04.39372Z"}],"euvd":[{"id":"EUVD-2026-84849","description":"An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild pointer access in yr_object_create(). An attacker can provide a specially crafted .yrc file that causes memory corruption and application crash.","status":"published","published":"2026-09-22T00:00:00Z","modified":"2026-09-25T19:47:47Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T17:27:55.070935Z"}],"ghsa":[{"id":"GHSA-f27p-cq5g-fr5x","title":"An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled ...","description":"An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild pointer access in yr_object_create(). An attacker can provide a specially crafted .yrc file that causes memory corruption and application crash.","status":"published","published":"2026-09-22T21:31:29Z","modified":"2026-09-25T21:34:02Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high"}],"cwes":["CWE-763"],"updated_at":"2026-11-02T15:12:27.845198Z"}],"nvd":[{"id":"CVE-2026-88340","description":"An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild pointer access in yr_object_create(). An attacker can provide a specially crafted .yrc file that causes memory corruption and application crash.","status":"published","published":"2026-09-22T20:17:10.25Z","modified":"2026-09-25T20:17:47.427Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-763"],"updated_at":"2026-11-02T14:12:50.703874Z"}],"osv":[{"id":"DEBIAN-CVE-2026-88340","description":"An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild pointer access in yr_object_create(). An attacker can provide a specially crafted .yrc file that causes memory corruption and application crash.","status":"published","published":"2026-09-22T20:17:10.25Z","modified":"2026-09-26T09:00:17.013416166Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T15:46:05.506112Z"},{"id":"UBUNTU-CVE-2026-88340","description":"An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild pointer access in yr_object_create(). An attacker can provide a specially crafted .yrc file that causes memory corruption and application crash.","status":"published","published":"2026-09-22T20:17:00Z","modified":"2026-10-17T13:01:15.552133575Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T16:57:24.828975Z"}]}}