VulnerabilityModified
CVE-2021-28856
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.
MEDIUM 5.5EPSS 0.84%
Does this matter?
Lower severity and a low EPSS score (0.84%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 0.84% probability · 58th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-369
- Affected
- entropymine/deark
- Source
- cve@mitre.org
EPSS 0.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://fatihhcelik.github.io/posts/Division-By-Zero-Deark/Patch, Third Party Advisory
- https://github.com/fuzzing2026/CVE-PoCs/tree/main/deark-CVE-2021-28856
- https://github.com/jsummers/deark/commit/62acb7753b0e3c0d3ab3c15057b0a65222313334Patch, Third Party Advisory
- https://fatihhcelik.github.io/posts/Division-By-Zero-Deark/Patch, Third Party Advisory
- https://github.com/jsummers/deark/commit/62acb7753b0e3c0d3ab3c15057b0a65222313334Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.