SEPTEMBER 11, 2026
Live Feed
Back to database
Case File

CVE-2026-51807

CRITICAL · CVSS 9.8 EPSS 0.37% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-14 · Last synced 2026-08-13

CyberRota Analysis

AI-Generated

OpenHTJ2K versions 0.18.3 and earlier are vulnerable to a heap-based out-of-bounds write due to inadequate bounds validation in the parsing of malformed JPEG 2000 codestreams. This vulnerability can result in heap corruption and potential process termination, posing a critical risk to applications utilizing affected versions. Organizations using OpenHTJ2K should prioritize updating to version 0.18.4 or later to mitigate the risk of exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-51807
Severity
CRITICAL
CVSS
9.8
EPSS
0.37%

Original NVD Description

Heap-based out-of-bounds write in j2k_precinct_subband::parse_packet_header() in OpenHTJ2K versions 0.18.3 and earlier (fixed in v0.18.4) caused by missing bounds validation before coding-pass lengths are written to j2k_codeblock::pass_length[128]. A crafted JPEG 2000 codestream containing malformed PPM packet headers can trigger a heap-based out-of-bounds write in j2k_precinct_subband::parse_packet_header() in source/core/coding/coding_units.cpp due to missing bounds validation for the j2k_codeblock::pass_length[128] array which can lead to heap corruption and process termination.