Medium severity5.5NVD Advisory· Published Apr 14, 2021· Updated Jun 17, 2026
CVE-2021-28855
CVE-2021-28855
Description
In Deark before 1.5.8, a specially crafted input file can cause a NULL pointer dereference in the dbuf_write function (src/deark-dbuf.c).
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Deark/Dearkdescription
- Range: <1.5.8
Patches
Vulnerability mechanics
References
3- fatihhcelik.github.io/posts/NULL-Pointer-Dereference-Deark/nvdPatchThird Party Advisory
- github.com/jsummers/deark/commit/287f5ac31dfdc074669182f51ece637706070eebnvdPatchThird Party Advisory
- github.com/fuzzing2026/CVE-PoCs/tree/main/deark-CVE-2021-28855nvd
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