OSV-2026-664

Heap-buffer-overflow in DwaCompressor_uncompress

No scoreFix available

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=508362159

Crash type: Heap-buffer-overflow WRITE {*}
Crash state:
DwaCompressor_uncompress
internal_exr_undo_dwaa
exr_uncompress_chunk

What each source reports

OSV No score

Heap-buffer-overflow in DwaCompressor_uncompress

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=508362159

Crash type: Heap-buffer-overflow WRITE {*}
Crash state:
DwaCompressor_uncompress
internal_exr_undo_dwaa
exr_uncompress_chunk

Record: OSV-2026-664
Updated: 2026-11-02

Affected packages

Affected packages
Package	Affected	Fixed
`openexr` OSS-Fuzz	Listed versions, plus commit ranges v3.3.10v3.3.10-rcv3.3.10-rc2v3.3.11v3.3.11-rc3 Show 45 moreShow less v3.3.4v3.3.4-rcv3.3.5v3.3.5-rcv3.3.5-rc3v3.3.6v3.3.6-rcv3.3.6-rc2v3.3.6-rc3v3.3.6-rc4v3.3.7v3.3.7-rcv3.3.7-rc2v3.3.7-rc3v3.3.7-rc4v3.3.8v3.3.8-rcv3.3.9v3.3.9-rcv3.3.9-rc2v3.4-alphav3.4.0v3.4.0-rcv3.4.1v3.4.1-rcv3.4.1-rc2v3.4.10v3.4.10-rcv3.4.11v3.4.11-rcv3.4.11-rc2v3.4.11-rc3v3.4.2v3.4.2-rcv3.4.2-rc2v3.4.3v3.4.3-rcv3.4.3-rc2v3.4.3-rc3v3.4.4v3.4.4-rcv3.4.4-rc2v3.4.5v3.4.5-rcv3.4.6	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

OSV-2026-664 is a vulnerability with no CVSS score yet in openexr, published May 2, 2026. No source lists public exploit code. A source reports a fix.

References

bugs.chromium.org/p/oss-fuzz/issues/detail?id=508362159

This page doesn't list everything

Left out here: 7 versions. The JSON record has them.