Integer overflow in OpenEXR - CVE-2026-34589

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Main Vulnerability Database Vulnerabilities #VU125330

Integer overflow in OpenEXR - CVE-2026-34589

Published: April 8, 2026


Vulnerability identifier: #VU125330
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-34589
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code or cause a denial of service.

The vulnerability exists due to integer overflow leading to an out-of-bounds write in the DWA lossy decoder when parsing a crafted scanline DWAA file. A remote attacker can supply a specially crafted file to execute arbitrary code or cause a denial of service.

User interaction is required to open or process the crafted file.


Affected software

OpenEXR
openEuler
Anolis OS
Fedora
OpenEXR
OpenEXR-debuginfo
OpenEXR-debugsource
OpenEXR-devel
OpenEXR-libs
mingw-openexr
OpenEXR-doc
usd

How to mitigate CVE-2026-34589

Install security update from vendor's website.

OpenEXR - addressed in versions 3.2.7, 3.3.9, 3.4.9
OpenEXR - addressed in versions 3.1.5-6, 3.1.11-7, 3.1.11-8
OpenEXR-debuginfo - addressed in versions 3.1.5-6, 3.1.11-7, 3.1.11-8
OpenEXR-debugsource - addressed in versions 3.1.5-6, 3.1.11-7, 3.1.11-8
OpenEXR-devel - addressed in versions 3.1.5-6, 3.1.11-7, 3.1.11-8
OpenEXR-libs - addressed in versions 3.1.5-6, 3.1.11-7, 3.1.11-8
mingw-openexr - addressed in versions 3.3.9-1.fc42, 3.3.9-1.fc43
OpenEXR-doc - addressed in versions 3.4.4-4, 3.4.10-1, 3.4.11-2
OpenEXR-libs - addressed in versions 3.4.4-4, 3.4.10-1, 3.4.11-2
OpenEXR-devel - addressed in versions 3.4.4-4, 3.4.10-1, 3.4.11-2
OpenEXR - addressed in versions 3.4.4-4, 3.4.10-1, 3.4.11-2
usd - addressed in versions 25.08-20.fc43, 26.03-3.fc44, 26.03-3.fc45

External References

Related Security Bulletins