CVE-2026-34544
Published:April 01, 2026
Updated:April 20, 2026
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). Consequences range from immediate crash (most likely) to corruption of adjacent heap allocations (layout-dependent). This issue has been patched in version 3.4.8.
Affected Packages
openexr (CONDA):
Affected version(s) >=3.4.0 <3.4.8Fix Suggestion:
Update to version 3.4.8https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.2.0 <v3.2.7Fix Suggestion:
Update to version v3.2.7https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.4.0 <v3.4.8Fix Suggestion:
Update to version v3.4.8https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.3.0 <v3.3.9Fix Suggestion:
Update to version v3.3.9openexr (PYTHON):
Affected version(s) >=3.4.0 <3.4.8Fix Suggestion:
Update to version 3.4.8Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.4
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
EPSS
Base Score:
0.01
