{"id":"CVE-2025-8842","aliases":["AZL-66207","AZL-66227","DEBIAN-CVE-2025-8842","EUVD-2025-24140","GHSA-55c8-h472-8xhp","UBUNTU-CVE-2025-8842"],"status":"published","title":"NASM Netwide Assember preproc.c do_directive use after free","description":"A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.","severity":{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0025,"percentile":0.16442,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-416"],"published":"2025-08-11T10:32:09Z","modified":"2026-11-05T05:40:51Z","affected":[{"source":"osv","ecosystem":"Azure Linux:2","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.16-1"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.16.01-2"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.01-1","2.16.03-1","3.01-1"]},{"source":"osv","ecosystem":"Debian:13","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.03-1","3.01-1"]},{"source":"osv","ecosystem":"Debian:14","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.03-1","3.01-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.11.06-1really2.11.05-1","2.11.08-1","2.11.08-1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.13.01-2","2.13.02-0.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.14.02-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.15.05-1","2.15.05-1ubuntu0.1~esm1","2.15.05-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.01-1","2.16.01-1build1","2.16.01-1ubuntu0.1~esm1","2.16.01-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.03-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.01-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.03-1","3.01-1"]}],"products":[{"vendor":"nasm","product":"netwide assember"},{"vendor":"nasm","product":"netwide_assembler"}],"references":[{"url":"https://vuldb.com/?id.319376","tags":["vdb-entry","technical-description","Third Party Advisory","VDB Entry","advisory","report"]},{"url":"https://vuldb.com/?ctiid.319376","tags":["signature","permissions-required","Permissions Required","VDB Entry","report"]},{"url":"https://vuldb.com/?submit.623184","tags":["third-party-advisory","exploit","Exploit","Third Party Advisory","VDB Entry","evidence","report"]},{"url":"https://bugzilla.nasm.us/show_bug.cgi?id=3392933","tags":["issue-tracking","exploit","Exploit","Issue Tracking","Vendor Advisory","report"]},{"url":"https://drive.google.com/file/d/11vEV1vMHXO4BrDGhvWAMm0Qo1woiUwVV/view?usp=drive_link","tags":["exploit","Exploit","evidence","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-8842","tags":["web"]},{"url":"https://github.com/advisories/GHSA-55c8-h472-8xhp"},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-8842","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-8842","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-8842","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-8842","title":"NASM Netwide Assember preproc.c do_directive use after free","description":"A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.","status":"published","published":"2025-08-11T10:32:09.151Z","modified":"2025-08-11T12:34:33.576Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","level":"medium","assessor":"cna"},{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","level":"medium","assessor":"cna"},{"version":"2.0","score":4.3,"vector":"AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","assessor":"cna"}],"cwes":["CWE-416","CWE-119"],"updated_at":"2026-11-02T14:32:38.351095Z"}],"euvd":[{"id":"EUVD-2025-24140","description":"A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.","status":"published","published":"2025-08-11T10:32:09Z","modified":"2025-08-11T12:34:33Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium"}],"updated_at":"2026-11-02T20:31:59.900029Z"}],"ghsa":[{"id":"GHSA-55c8-h472-8xhp","title":"A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the...","description":"A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.","status":"published","published":"2025-08-11T12:30:35Z","modified":"2025-09-15T15:32:12Z","cvss":[{"version":"4.0","score":1.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-119","CWE-416"],"updated_at":"2026-11-02T15:03:37.061484Z"}],"nvd":[{"id":"CVE-2025-8842","description":"A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.","status":"published","published":"2025-08-11T11:15:26.767Z","modified":"2026-06-17T10:07:46.007Z","cvss":[{"version":"4.0","score":1.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:L/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"secondary"}],"cwes":["CWE-119","CWE-416"],"updated_at":"2026-11-02T14:11:22.953396Z"}],"osv":[{"id":"CVE-2025-8842","description":"A vulnerability has been found in NASM Netwide Assember 2.17rc0. 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The exploit has been disclosed to the public and may be used.","status":"published","published":"2025-08-11T11:15:26.767Z","modified":"2026-09-01T20:05:59.089731623Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:48.440897Z"},{"id":"UBUNTU-CVE-2025-8842","description":"A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.","status":"published","published":"2025-08-11T11:15:00Z","modified":"2026-10-17T12:57:32.977165259Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":1.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","level":"low"}],"updated_at":"2026-11-02T16:55:55.926217Z"},{"id":"AZL-66207","title":"CVE-2025-8842 affecting package nasm 2.16-1","description":"A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.","status":"published","published":"2025-08-11T11:15:26Z","modified":"2026-04-21T04:37:48.61813Z","updated_at":"2026-11-02T15:28:08.354547Z"},{"id":"AZL-66227","title":"CVE-2025-8842 affecting package nasm 2.16.01-2","description":"A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.","status":"published","published":"2025-08-11T11:15:26Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:23.841127Z"}]}}