CVE-2020-27824
openjpeg: global-buffer-overflow read in opj_dwt_calc_explicit_stepsizes()
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · November 25, 2020
Updated · June 27, 2026
Description
A flaw was found in OpenJPEG’s encoder in the opj_dwt_calc_explicit_stepsizes() function. This flaw allows an attacker who can supply crafted input to decomposition levels to cause a buffer overflow. The highest threat from this vulnerability is to system availability.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-125 · Out-of-bounds Read