CVE WatchSep 22, 2026

CVE-2020-6851

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_im

CVSS

7.5

High

EPSS

5.3%

p93

KEV

—

Exploit Today

0-100

Published: Jan 13, 2020 · Last modified: Sep 22, 2026 · CWE-787

EPSS · 30d

5.2%EPSS · 30 days5.3%

2026-10-072026-11-03

Technical description

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.

Official references

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