CVE-2026-51807
CVSS Score
9.8
EPSS Score
0.5%
EPSS Percentile
38th
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.
| Vendor | n/a |
| Product | n/a |
| Published | Jul 14, 2026 |
| Last Updated | Jul 17, 2026 |
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Affected Versions
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