by Kastro CVE-2026-42216
AcademySoftwareFoundation openexr — OpenEXR: Out-of-bounds read in `IDManifest::init()` during prefix expansion
Description · from the CVE record
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
ProductAffectedFixed inSource
openexr>= 3.0.0, < 3.2.9–CNA
openexr>= 3.3.0, < 3.3.11–CNA
openexr>= 3.4.0, < 3.4.11–CNA
Red Hat Enterprise Linux 10see advisory0:3.1.10-8.el10_2.3redhat-SADP
Red Hat Enterprise Linux 10.0 Extended Update Supportsee advisory0:3.1.10-8.el10_0.3redhat-SADP
Red Hat Enterprise Linux 9see advisory0:3.1.1-3.el9_8.3redhat-SADP
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutionssee advisory0:3.1.1-2.el9_2.4redhat-SADP
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutionssee advisory0:3.1.1-2.el9_4.4redhat-SADP
Red Hat Enterprise Linux 9.6 Extended Update Supportsee advisory0:3.1.1-3.el9_6.3redhat-SADP
Red Hat Enterprise Linux 6see advisory–redhat-SADP
Red Hat Enterprise Linux 7see advisory–redhat-SADP
Red Hat Enterprise Linux 8see advisory–redhat-SADP
Scores by source
NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
GitHub_M (CNA)8.8CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
redhat-SADP (CNA)8.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: partial