{"id":"CVE-2020-6621","aliases":["EUVD-2020-27769","GHSA-4pw6-3g9g-fxcr","UBUNTU-CVE-2020-6621"],"status":"published","title":"stb stb_truetype.h through 1.22 has a heap-based buffer over-read in ttUSHORT.","description":"stb stb_truetype.h through 1.22 has a heap-based buffer over-read in ttUSHORT.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01143,"percentile":0.67154,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2020-01-08T22:51:37Z","modified":"2026-10-17T12:56:56Z","affected":[{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"libstb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20190817.1.052dce1-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"libstb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20200713.b42009b+ds-1","0.0~git20210910.af1a5bc+ds-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libstb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20230129.5736b15+ds-1","0.0~git20230129.5736b15+ds-1.1","0.0~git20230129.5736b15+ds-1.2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"libstb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20240715.f7f20f39fe4f+ds-1","0.0~git20241109.5c20573+ds-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libstb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20250907.fede005+ds-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"libstb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20241109.5c20573+ds-1","0.0~git20250907.fede005+ds-1"]}],"products":[{"vendor":"nothings","product":"stb_truetype.h"}],"references":[{"url":"https://github.com/nothings/stb/issues/867","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-6621"},{"url":"https://github.com/advisories/GHSA-4pw6-3g9g-fxcr"},{"url":"https://ubuntu.com/security/CVE-2020-6621","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-6621","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-6621","description":"stb stb_truetype.h through 1.22 has a heap-based buffer over-read in ttUSHORT.","status":"published","published":"2020-01-08T22:51:37Z","modified":"2024-08-04T09:11:04.516Z","updated_at":"2026-11-02T14:35:52.268457Z"}],"euvd":[{"id":"EUVD-2020-27769","description":"stb stb_truetype.h through 1.22 has a heap-based buffer over-read in ttUSHORT.","status":"published","published":"2020-01-08T22:51:37Z","modified":"2024-08-04T09:11:04Z","updated_at":"2026-11-03T03:08:02.022514Z"}],"ghsa":[{"id":"GHSA-4pw6-3g9g-fxcr","title":"stb stb_truetype.h through 1.22 has a heap-based buffer over-read in ttUSHORT.","description":"stb stb_truetype.h through 1.22 has a heap-based buffer over-read in ttUSHORT.","status":"published","published":"2022-05-24T17:06:00Z","modified":"2023-01-29T05:01:00Z","updated_at":"2026-11-02T14:44:43.065987Z"}],"nvd":[{"id":"CVE-2020-6621","description":"stb stb_truetype.h through 1.22 has a heap-based buffer over-read in ttUSHORT.","status":"published","published":"2020-01-08T23:15:10.677Z","modified":"2026-06-17T03:23:41.143Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:05:52.385274Z"}],"osv":[{"id":"UBUNTU-CVE-2020-6621","description":"stb stb_truetype.h through 1.22 has a heap-based buffer over-read in ttUSHORT.","status":"published","published":"2020-01-08T23:15:00Z","modified":"2026-10-17T12:56:56.793898304Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:25.728622Z"}]}}