PT-2026-59481

Summary While fuzzing openexr exrcheck fuzzer, Valgrind reports a conditional branch depending on uninitialized data inside generic unpack. This indicates a use of uninitialized memory CWE-457. The issue is reproducible with the current OSS-Fuzz harness and a single-file PoC. Details Environment:...

OSV-2026-653 Heap-buffer-overflow in generic_unpack

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=507413960 Crash type: Heap-buffer-overflow READ 2 Crash state: genericunpack exrdecodingrun Imf40::checkCoreFile...

SUSE CVE-2026-34378

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.4.0 to before 3.4.9, a missing bounds check on the dataWindow attribute in EXR file headers allows an attacker to trigger a signed integer overfl...

EUVD-2025-50828

OpenEXR Makes Use of Uninitialized Memory...

GHSA-3H9H-QFVW-98HQ OpenEXR Makes Use of Uninitialized Memory

Summary While fuzzing openexrexrcheckfuzzer, Valgrind reports a conditional branch depending on uninitialized data inside genericunpack. This indicates a use of uninitialized memory CWE-457. The issue is reproducible with the current OSS-Fuzz harness and a single-file PoC. Details Environment: -...

DEBIAN-CVE-2026-34378

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.4.0 to before 3.4.9, a missing bounds check on the dataWindow attribute in EXR file headers allows an attacker to trigger a signed integer overfl...

CVE-2026-34378

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.4.0 to before 3.4.9, a missing bounds check on the dataWindow attribute in EXR file headers allows an attacker to trigger a signed integer overfl...

CVE-2026-34378

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.4.0 to before 3.4.9, a missing bounds check on the dataWindow attribute in EXR file headers allows an attacker to trigger a signed integer overfl...

UBUNTU-CVE-2026-34378

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.4.0 to before 3.4.9, a missing bounds check on the dataWindow attribute in EXR file headers allows an attacker to trigger a signed integer overfl...

CVE-2026-34378

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.4.0 to before 3.4.9, a missing bounds check on the dataWindow attribute in EXR file headers allows an attacker to trigger a signed integer overfl...

Heap-based Buffer Overflow

Overview OpenEXR is a Python bindings for the OpenEXR image file format Affected versions of this package are vulnerable to Heap-based Buffer Overflow via genericunpack. An attacker can achieve arbitrary code execution by tricking a user into opening a specially crafted EXR file that exploits...

OESA-2025-2740 OpenEXR security update

OpenEXR is a high dynamic-range HDR image file format originally developed by Industrial Light Magic for use in computer imaging applications. Security Fixes: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture...

Use of Uninitialized Variable

Overview OpenEXR is a Python bindings for the OpenEXR image file format Affected versions of this package are vulnerable to Use of Uninitialized Variable via the genericunpack function. An attacker can trigger undefined behavior or cause a crash by providing specially crafted input that leads to...

CVE-2025-64181

CVE-2025-64181 affects OpenEXR OpenEXRCore in 3.3.0–3.3.5 and 3.4.0–3.4.2 where fuzzing revealed a use of uninitialized memory in generic_unpack, leading to undefined behavior or potential crash. Affected releases are fixed in 3.3.6 and 3.4.3. Fedora/OpenSUSE advisories corroborate the backport/f...

CVE-2025-64181

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.5 and 3.4.0 through 3.4.2, while fuzzing openexrexrcheckfuzzer, Valgrind reports a conditional branch depending on...

OSV-2025-865 Heap-buffer-overflow in generic_unpack

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=456158449 Crash type: Heap-buffer-overflow READ 4 Crash state: genericunpack Imf34::ScanLineInputFile::Data::readPixels Imf34::InputFile::readPixels...

PT-2025-46201

Name of the Vulnerable Software and Affected Versions OpenEXR versions 3.3.0 through 3.3.5 OpenEXR versions 3.4.0 through 3.4.2 Description OpenEXR is an image storage format used in the motion picture industry. A flaw exists due to a conditional branch based on uninitialized data within the...

OSV-2025-597 Heap-buffer-overflow in generic_unpack

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=435779241 Crash type: Heap-buffer-overflow READ 2 Crash state: genericunpack exrdecodingrun Imf34::ScanLineProcess::rundecode...