CVE-2025-64181lowCWE-457

CVE-2025-64181: low-severity vulnerability in AcademySoftwareFoundation openexr

OpenEXR Makes Use of Uninitialized Memory

Published · Updated

8Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 2epss 0.4%
exploitation probability
0.4%top 70% of all CVEs
observed exploitation
nono source reports it
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.5 and 3.4.0 through 3.4.2, while fuzzing `openexr_exrcheck_fuzzer`, Valgrind reports a conditional branch depending on uninitialized data inside `generic_unpack`. This indicates a use of uninitialized memory. The issue can result in undefined behavior and/or a potential crash/denial of service. Versions 3.3.6 and 3.4.3 fix the issue.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
AcademySoftwareFoundation · openexr
Related CVEs — AcademySoftwareFoundation openexr

In the same product, most dangerous first.

CVE-2026-34545HIGHOpenEXR: integer overflow lead to OOB in HTJ2K decoderEPSS 0.7%CVE-2026-41142HIGHOpenEXR is Vulnerable to Integer overflow in ImageChannel::resize leads to heap OOB write via OpenEXRUtil public APIEPSS 0.7%CVE-2026-42216HIGHOpenEXR: Out-of-bounds read in `IDManifest::init()` during prefix expansionEPSS 0.7%CVE-2026-42217MEDIUMOpenEXR: Shift exponent overflow in `readVariableLengthInteger()` (`ImfIDManifest.cpp`)EPSS 0.7%CVE-2026-34588HIGHOpenEXR has a signed 32-bit Overflow in PIZ Decoder Leads to OOB Read/WriteEPSS 0.6%CVE-2026-34543HIGHOpenEXR: Heap information disclosure in PXR24 decompression via unchecked decompressed size (undo_pxr24_impl)EPSS 0.5%
References
https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-3h9h-qfvw-98hqhttps://github.com/user-attachments/files/23024726/archive0.ziphttps://github.com/user-attachments/files/23024736/archive1.ziphttps://github.com/user-attachments/files/23024740/archive2.ziphttps://github.com/user-attachments/files/23024744/archive3.ziphttps://github.com/user-attachments/files/23024746/archive4.zip