CVE-2026-88384
Published:September 24, 2026
Updated:October 10, 2026
OpenEXR 3.4.14 contains a NULL Pointer Dereference in the C++ attribute parsing path. A specially crafted EXR file containing an unknown-type attribute with dataSize set to zero causes the parser to create an opaque attribute with a NULL packed_data pointer. The OpaqueAttribute constructor passes the NULL pointer to memcpy() without validating the zero-size condition, resulting in undefined behavior and process termination, leading to denial of service.
Affected Packages
openexr (CONDA):
Affected version(s) >=3.4.0 <3.5.0Fix Suggestion:
Update to version 3.5.0https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.4-alpha <v3.5.0Fix Suggestion:
Update to version v3.5.0openexr (PYTHON):
Affected version(s) >=3.4.0 <3.5.0Fix Suggestion:
Update to version 3.5.0Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.5
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
NULL Pointer Dereference
EPSS
Base Score:
0.19