Security Advisory

CVE-2026-51807

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-14 00:00:00

Last updated 2026-07-17 15:02:40

Assigner mitre

CVSS score not scored

State PUBLISHED

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.

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