PT-2026-29621 · Openexr · Openexr

Nicoppida · CVE-2026-34544 · Published 2026-04-01 · Updated 2026-07-17

Positive Technologies (AI Summary)

CVSS v4.0

8.4

High

Base vector

AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions OpenEXR versions 3.4.0 through 3.4.7

Description OpenEXR, an image storage format used in the motion picture industry, contains a flaw where a specially crafted EXR file (B44 or B44A format) can lead to an out-of-bounds write during decoding via the exr decoding run() function. This can result in a crash or, potentially, corruption of heap allocations.

Recommendations Update to OpenEXR version 3.4.8 or later.

Exploit

Fix

Integer Overflow

Memory Corruption

Weakness Enumeration

CWE-190

CWE-787

Related Identifiers

CVE-2026-34544

ECHO-FD63-872C-58AA

GHSA-H762-RHV3-H25V

OPENSUSE-SU-2026:10505-1

PYSEC-2026-2847

Affected Products

Openexr

References · 31

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34544.json · Exploit
• https://github.com/AcademySoftwareFoundation/openexr/commit/35e7aa35e22c1975606be86e859f31cc1fc598ee · Patch
• https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-h762-rhv3-h25v · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-34544 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2026-34544 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-34544 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-h762-rhv3-h25v · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2026-2847 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2026-34544 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-34544 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-34544 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-34544 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-13-CVE-2026-34544 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10505-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-34544 · Vendor Advisory