{"id":"CVE-2021-39247","aliases":["EUVD-2021-25609","GHSA-93xv-rpmh-3262","UBUNTU-CVE-2021-39247"],"status":"published","title":"Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to...","description":"Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to is_last_single_ascii in code1.c, and rs_encode_uint in reedsol.c.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00922,"percentile":0.60791,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2021-08-17T20:17:55Z","modified":"2026-06-17T04:03:23Z","affected":[{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"zint","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.9.1-1.1","2.10.0-1"]}],"products":[{"vendor":"zint","product":"barcode_generator"}],"references":[{"url":"https://sourceforge.net/p/zint/tickets/232/","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","report"]},{"url":"https://sourceforge.net/p/zint/code/ci/9b02cd52214e80f945bff41fc94bc1e17e15810c/","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39247"},{"url":"https://github.com/advisories/GHSA-93xv-rpmh-3262"},{"url":"https://ubuntu.com/security/CVE-2021-39247","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39247","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-39247","description":"Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to is_last_single_ascii in code1.c, and rs_encode_uint in reedsol.c.","status":"published","published":"2021-08-17T20:17:55Z","modified":"2024-08-04T02:06:40.972Z","updated_at":"2026-11-02T14:33:09.540052Z"}],"euvd":[{"id":"EUVD-2021-25609","description":"Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to is_last_single_ascii in code1.c, and rs_encode_uint in reedsol.c.","status":"published","published":"2021-08-17T20:17:55Z","modified":"2024-08-04T02:06:40Z","updated_at":"2026-11-03T03:24:23.719378Z"}],"ghsa":[{"id":"GHSA-93xv-rpmh-3262","title":"Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to...","description":"Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to is_last_single_ascii in code1.c, and rs_encode_uint in reedsol.c.","status":"published","published":"2022-05-24T19:11:20Z","modified":"2023-01-30T05:01:33Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:46:25.989719Z"}],"nvd":[{"id":"CVE-2021-39247","description":"Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to is_last_single_ascii in code1.c, and rs_encode_uint in reedsol.c.","status":"published","published":"2021-08-17T21:15:06.94Z","modified":"2026-06-17T04:03:23.807Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/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-125"],"updated_at":"2026-11-02T14:06:57.318236Z"}],"osv":[{"id":"UBUNTU-CVE-2021-39247","description":"Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to is_last_single_ascii in code1.c, and rs_encode_uint in reedsol.c.","status":"published","published":"2021-08-17T21:15:00Z","modified":"2026-04-22T12:59:47.517612Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:28.526929Z"}]}}