CVE-2021-28856 json
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 2021-04-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-15510
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 58%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- entropymine deark 1.5.8
Exploit prediction
0.84% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-369 Divide By Zero
References
-
github.com
/jsummers/deark/commit/62acb7753b0e3c0d3ab3c15057b0a65222313334
patch, third-party-advisory
-
fatihhcelik.github.io
/posts/Division-By-Zero-Deark/
patch, third-party-advisory
- github.com /fuzzing2026/CVE-PoCs/tree/main/deark-CVE-2021-28856
Sources
- CVE List CVE-2021-28856
- NVD CVE-2021-28856
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