{"id":"CVE-2018-20375","aliases":["DEBIAN-CVE-2018-20375","EUVD-2018-12933","GHSA-r345-v8vm-cxpg","UBUNTU-CVE-2018-20375"],"status":"published","title":"An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source...","description":"An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the sym_pop function in tccgen.c.","severity":{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00746,"percentile":0.55058,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2018-12-23T18:00:00Z","modified":"2026-10-23T18:03:05Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"tcc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.27+git20200814.62c30a4a-1","0.9.27+git20200814.62c30a4a-2"]},{"source":"osv","ecosystem":"Debian:13","package":"tcc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.27+git20200814.62c30a4a-2"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"tcc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.27~git20140923.9d7fb33-3ubuntu1","0.9.27~git20151227.933c223-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"tcc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.27~git20161217.cd9514ab-3ubuntu1","0.9.27-2","0.9.27-4","0.9.27-5"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"tcc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.27-8"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"tcc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.27+git20200814.62c30a4a-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"tcc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.27+git20200814.62c30a4a-1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"tcc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.27+git20200814.62c30a4a-2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"tcc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.27+git20200814.62c30a4a-2build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"tcc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.27+git20200814.62c30a4a-2","0.9.27+git20200814.62c30a4a-2build1"]}],"products":[{"vendor":"tinycc","product":"tinycc"}],"references":[{"url":"https://lists.nongnu.org/archive/html/tinycc-devel/2018-12/msg00014.html","tags":["x_refsource_MISC","x_transferred","Exploit","Mailing List","Third Party Advisory","evidence","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-20375"},{"url":"https://github.com/advisories/GHSA-r345-v8vm-cxpg"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-20375","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-20375","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-20375","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-20375","description":"An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the sym_pop function in tccgen.c.","status":"published","published":"2018-12-23T18:00:00Z","modified":"2024-08-05T11:58:18.966Z","updated_at":"2026-11-02T14:34:59.872731Z"}],"euvd":[{"id":"EUVD-2018-12933","description":"An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the sym_pop function in tccgen.c.","status":"published","published":"2018-12-23T18:00:00Z","modified":"2024-08-05T11:58:18Z","updated_at":"2026-11-03T02:39:31.423203Z"}],"ghsa":[{"id":"GHSA-r345-v8vm-cxpg","title":"An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source...","description":"An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the sym_pop function in tccgen.c.","status":"published","published":"2022-05-14T01:42:53Z","modified":"2023-02-02T05:04:33Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:51:53.84386Z"}],"nvd":[{"id":"CVE-2018-20375","description":"An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the sym_pop function in tccgen.c.","status":"published","published":"2018-12-23T18:29:00.417Z","modified":"2026-06-17T01:52:43.65Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:04:50.99633Z"}],"osv":[{"id":"CVE-2018-20375","description":"An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the sym_pop function in tccgen.c.","status":"published","published":"2018-12-23T18:29:00.417Z","modified":"2026-03-14T09:28:57.643671Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:09.145458Z"},{"id":"DEBIAN-CVE-2018-20375","description":"An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the sym_pop function in tccgen.c.","status":"published","published":"2018-12-23T18:29:00.417Z","modified":"2026-10-23T18:03:05.280854827Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:30.57382Z"},{"id":"UBUNTU-CVE-2018-20375","description":"An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the sym_pop function in tccgen.c.","status":"published","published":"2018-12-23T18:29:00Z","modified":"2026-10-17T12:54:58.227402317Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:17.91743Z"}]}}