CVE-2020-6851
HIGH 7.5EPSS 5.3%
OpenJPEG through 2.3.1 has a heap-based buffer overflow in opj_t1_clbl_decode_processor in openjp2/t1.c because of lack of opj_j2k_update_image_dimensions validation.
- CVSS v3.1 NVD
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS v2.0 NVD
- 5.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P - EPSS
- 5.29% chance of exploitation in the next 30 days, 92nd percentile
- Published
- 2020-01-13
- Updated
- 2026-09-22
Proof-of-concept exploits (1)
- uclouvain/openjpeg/issues/12281118★ · 2026-09-05
Security advisories
- https://access.redhat.com/errata/RHSA-2020:0262
- https://access.redhat.com/errata/RHSA-2020:0274
- https://access.redhat.com/errata/RHSA-2020:0296
- https://lists.debian.org/debian-lts-announce/2020/01/msg00025.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00008.html
- https://www.debian.org/security/2021/dsa-4882
- https://www.oracle.com/security-alerts/cpujul2020.html