{"id":"CVE-2025-8844","aliases":["AZL-66213","AZL-66230","DEBIAN-CVE-2025-8844","EUVD-2025-24142","GHSA-3r2j-2686-wg8h","UBUNTU-CVE-2025-8844"],"status":"published","title":"NASM Netwide Assember preproc.c parse_smacro_template null pointer dereference","description":"A vulnerability was determined in NASM Netwide Assember 2.17rc0. This vulnerability affects the function parse_smacro_template of the file preproc.c. The manipulation leads to null pointer dereference. Attacking locally is a requirement. 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:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00291,"percentile":0.21765,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-404","CWE-476"],"published":"2025-08-11T11:32:08Z","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.319378","tags":["vdb-entry","technical-description","Third Party Advisory","VDB Entry","advisory","report"]},{"url":"https://vuldb.com/?ctiid.319378","tags":["signature","permissions-required","Permissions Required","VDB Entry","report"]},{"url":"https://vuldb.com/?submit.623187","tags":["third-party-advisory","Exploit","Third Party Advisory","VDB Entry","evidence","report"]},{"url":"https://vuldb.com/?submit.623196","tags":["third-party-advisory","Exploit","Third Party Advisory","VDB Entry","evidence","report"]},{"url":"https://vuldb.com/?submit.623198","tags":["third-party-advisory","exploit","Exploit","Third Party Advisory","VDB Entry","evidence","report"]},{"url":"https://bugzilla.nasm.us/show_bug.cgi?id=3392936","tags":["issue-tracking","exploit","Exploit","Issue Tracking","Vendor Advisory","report"]},{"url":"https://drive.google.com/file/d/10TSdMErFTBtLFIwfh_fia635cmtmFuei/view?usp=drive_link","tags":["exploit","Exploit","evidence","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-8844","tags":["web"]},{"url":"https://github.com/advisories/GHSA-3r2j-2686-wg8h"},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-8844","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-8844","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-8844","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-8844","title":"NASM Netwide Assember preproc.c parse_smacro_template null pointer dereference","description":"A vulnerability was determined 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":"2025-08-11T12:15:26Z","modified":"2026-04-21T04:37:48.801495Z","updated_at":"2026-11-02T15:28:08.354547Z"},{"id":"AZL-66230","title":"CVE-2025-8844 affecting package nasm 2.16.01-2","description":"A vulnerability was determined in NASM Netwide Assember 2.17rc0. This vulnerability affects the function parse_smacro_template of the file preproc.c. The manipulation leads to null pointer dereference. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.","status":"published","published":"2025-08-11T12:15:26Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:23.841127Z"}]}}