OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. From version 3.4.0 through 3.4.13, a crafted HTJ2K-compressed EXR can c
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. From version 3.4.0 through 3.4.13, a crafted HTJ2K-compressed EXR can crash OpenEXR during normal decode. An HTJ2K-compressed EXR whose JPEG 2000 SIZ fields place the first tile outside the visible image can reach invalid tile and codeblock geometry in the vendored OpenJPH AVX2 decoder, causing a stack out-of-bounds write and denial of service. OpenEXR's HTJ2K path val
Affected packages
- openexr
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://www.cve.org/CVERecord?id=CVE-2026-68516
- https://github.com/academysoftwarefoundation/openexr/commit/45521f92104373b5c850f27f2d4659ab6759e848
- https://github.com/academysoftwarefoundation/openexr/commit/85009d840cc085aa96ad03ae76fa6463defeb0e5
- https://github.com/academysoftwarefoundation/openexr/security/advisories/ghsa-fw66-6xph-56jm
- https://github.com/cveproject/cvelistv5/tree/main/cves/2026/68xxx/cve-2026-68516.json
- https://nvd.nist.gov/vuln/detail/cve-2026-68516
Structured record: https://ubuntu.com/security/CVE-2026-68516
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