CVE-2026-111151
OpenJPH through 0.32.0 Heap Out-of-Bounds Write in HTJ2K Cleanup-Pass Decoder
aous72 OpenJPH
CVSS
6.9MediumExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 15 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.13%Chance of exploitation activity in the next 30 days, higher than 2% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
OpenJPH through 0.32.0 contains a heap out-of-bounds write vulnerability in the HTJ2K cleanup-pass decoder that allows attackers to corrupt memory via one-row codeblocks. Attackers can supply a crafted .j2c or .jph codestream with small precinct sizes, causing the decoder to write a second row past the codeblock buffer, resulting in memory corruption and crashes.
Text from CVE List
Affected versions 1
- OpenJPHaffected: all versions through 0.32.0CVE List
References 6
- vulncheck.com/advisories/openjph-through-0.32.0-heap-out-of-bounds-write-in-htj2k-cleanup-pass-decoderAdvisoryvia CVE List
- hackmd.io/@haind-pwn/openjph-htj2k-degenerate-codeblock-cleanup-oob-writeExploitvia CVE List
- github.com/aous72/OpenJPH/blob/23c422895ce6c3a156935222e4715ee0b7be952c/src/core/codestream/ojph_subband.cpp#L136-L142Referencevia CVE List
- github.com/aous72/OpenJPH/blob/23c422895ce6c3a156935222e4715ee0b7be952c/src/core/codestream/ojph_codeblock.cpp#L79-L84Referencevia CVE List
- github.com/aous72/OpenJPH/blob/23c422895ce6c3a156935222e4715ee0b7be952c/src/core/coding/ojph_block_decoder32.cpp#L1135-L1155Referencevia CVE List
- github.com/aous72/OpenJPHReferencevia CVE List