CVE-2021-28855
Medium
Published: 14 April 2021
Published
14 April 2021
Modified
26 January 2026
KEV Added
—
Patch
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CVSS Score v3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score
0.0020
41.8th percentile
Risk Priority
11
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-28855 is a medium-severity NULL Pointer Dereference (CWE-476) vulnerability in Entropymine Deark. Its CVSS base score is 5.5 (Medium).
Operationally, ranked at the 41.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-15509
Vulnerability details
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).
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
entropymine
deark
≤ 1.5.8
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.