CVE-2021-28855

medium

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).

References

Advisories
More

https://github.com/jsummers/deark/commit/287f5ac31dfdc074669182f51ece637706070eeb

https://fatihhcelik.github.io/posts/NULL-Pointer-Dereference-Deark/

https://github.com/fuzzing2026/CVE-PoCs/tree/main/deark-CVE-2021-28855

Details

Source: Mitre, NVD

Published: 2021-04-14

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00315