CVE-2026-42216
Published:May 07, 2026
Updated:May 16, 2026
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From versions 3.0.0 to before 3.2.9, 3.3.0 to before 3.3.11, and 3.4.0 to before 3.4.11, IDManifest::init() reconstructs strings from a prefix-compressed representation. If the previous string is longer than 255 bytes, the next string is expected to begin with a 2-byte prefix length. The code reads stringList[i][0] and stringList[i][1] without checking that the current string has at least two bytes. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.
Affected Packages
openexr (CONAN):
Affected version(s) >=3.4.2 <3.4.11Fix Suggestion:
Update to version 3.4.11openexr (CONAN):
Affected version(s) >=3.3.0 <3.3.11Fix Suggestion:
Update to version 3.3.11openexr (CONAN):
Affected version(s) >=3.1.4 <3.2.9Fix Suggestion:
Update to version 3.2.9https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.0.1-beta <v3.2.9Fix Suggestion:
Update to version v3.2.9https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.4.0 <v3.4.11Fix Suggestion:
Update to version v3.4.11https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.3.0 <v3.3.11Fix Suggestion:
Update to version v3.3.11Related Resources (1)
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Contact UsCVSS v4
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Out-of-bounds Read
EPSS
Base Score:
0.06