CVE-2025-64182
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 3.2.0 through 3.2.4, 3.3.0 through 3.3.5, and 3.4.0 through 3.4.2, a memory safety bug in the legacy OpenEXR Python adapter (the deprecated OpenEXR.InputFile wrapper) allow crashes and likely code execution when opening attacker-controlled EXR files or when passing crafted Python objects. Integer overflow and unchecked allocation in InputFile.channel() and InputFile.channels() can lead to heap overflow (32 bit) or a NULL deref (64 bit). Versions 3.2.5, 3.3.6, and 3.4.3 contain a patch for 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) >=3.2.1 <3.2.5Fix Suggestion:
Update to version 3.2.5openexr (CONAN):
Affected version(s) >=3.3.0 <3.3.6Fix Suggestion:
Update to version 3.3.6openexr (CONDA):
Affected version(s) >=2.3.0 <3.2.5Fix Suggestion:
Update to version 3.2.5openexr (CONDA):
Affected version(s) >=3.3.1 <3.3.6Fix Suggestion:
Update to version 3.3.6https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.4.0 <v3.4.3Fix Suggestion:
Update to version v3.4.3https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.2.0 <v3.2.5Fix Suggestion:
Update to version v3.2.5https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.3.0 <v3.3.6Fix Suggestion:
Update to version v3.3.6openexr (PYTHON):
Affected version(s) >=3.4.0 <3.4.3Fix Suggestion:
Update to version 3.4.3openexr (PYTHON):
Affected version(s) >=3.3.0 <3.3.6Fix Suggestion:
Update to version 3.3.6openexr (PYTHON):
Affected version(s) >=3.2.3 <3.2.5Fix Suggestion:
Update to version 3.2.5Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.5
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
POC
CVSS v3
Base Score:
7.7
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
EPSS
Base Score:
0.02
