{"id":"CVE-2021-28856","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-28856","generatedAt":"2026-10-27T22:31:49.935Z","title":"In Deark before v1.5.8, a specially crafted input file can cause a division by zero in (src/fmtutil.c) because of the value of pixelsize.","description":"In Deark before v1.5.8, a specially crafted input file can cause a division by zero in (src/fmtutil.c) because of the value of pixelsize.","published":"2021-04-14T17:15:14.000Z","lastModified":"2026-06-17T03:47:00.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"cwe":["CWE-369"],"affected":["entropymine/deark"],"epss":{"score":0.00843,"percentile":0.57687,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.84%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://fatihhcelik.github.io/posts/Division-By-Zero-Deark/","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/fuzzing2026/CVE-PoCs/tree/main/deark-CVE-2021-28856","source":"cve@mitre.org"},{"url":"https://github.com/jsummers/deark/commit/62acb7753b0e3c0d3ab3c15057b0a65222313334","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://fatihhcelik.github.io/posts/Division-By-Zero-Deark/","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/jsummers/deark/commit/62acb7753b0e3c0d3ab3c15057b0a65222313334","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-28856","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}