CVE-2025-64181
November 10, 2025
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.
Affected Packages
openexr (CONAN):
Affected version(s) =3.4.2 <3.4.3Fix Suggestion:
Update to version 3.4.3openexr (CONAN):
Affected version(s) >=3.3.0 <3.3.6Fix Suggestion:
Update to version 3.3.6openexr (PYTHON):
Affected version(s) >=3.3.0 <3.3.6Fix Suggestion:
Update to version 3.3.6openexr (PYTHON):
Affected version(s) >=3.4.0 <3.4.3Fix Suggestion:
Update to version 3.4.3Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
2
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
POC
CVSS v3
Base Score:
4
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Use of Uninitialized Variable
EPSS
Base Score:
0.11
