CVE-2026-40250 OpenEXR has integer overflow in DWA decoder outBufferEnd pointer arithmetic (missed variant of CVE-2026-34589)

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, internaldwacompressor.h:1040 performs chan-width chan-bytesperelement in...

CVE-2026-40250 OpenEXR has integer overflow in DWA decoder outBufferEnd pointer arithmetic (missed variant of CVE-2026-34589)

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, internaldwacompressor.h:1040 performs chan-width chan-bytesperelement in...

EUVD-2026-24046

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, internaldwacompressor.h:1722 performs curc-width curc-height in int32...

CVE-2026-40244

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, internaldwacompressor.h:1722 performs curc-width curc-height in int32...

CVE-2026-40244 OpenEXR has integer overflow in DWA setupChannelData planarUncRle pointer arithmetic (missed variant of CVE-2026-34589)

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, internaldwacompressor.h:1722 performs curc-width curc-height in int32...

PT-2026-33909

Name of the Vulnerable Software and Affected Versions OpenEXR versions 3.4.0 through 3.4.9 OpenEXR versions 3.3.0 through 3.3.9 OpenEXR versions 3.2.0 through 3.2.7 Description An integer overflow occurs in the reference implementation of the EXR image storage format. The issue exists in internal...

PT-2026-33908

Name of the Vulnerable Software and Affected Versions OpenEXR versions 3.4.0 through 3.4.9 OpenEXR versions 3.3.0 through 3.3.9 OpenEXR versions 3.2.0 through 3.2.7 Description An integer overflow occurs in the reference implementation of the EXR image storage format. Specifically, the file...

OESA-2026-1844 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...

CVE-2026-34379

A flaw was found in OpenEXR, an image storage format library for the motion picture industry. A remote attacker could exploit this vulnerability by providing a specially crafted DWA or DWAB-compressed EXR file containing a FLOAT-type channel. When the file is decoded, a misaligned memory write...

DEBIAN-CVE-2026-34379

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, a misaligned memory write vulnerability exists in LossyDctDecoderexecute in...

Incorrect Type Conversion or Cast

Overview Affected versions of this package are vulnerable to Incorrect Type Conversion or Cast in the LossyDctDecoderexecute process when decoding DWA or DWAB-compressed files containing FLOAT-type channels. An attacker can cause undefined behavior, potentially leading to application crashes or...

CVE-2026-34589 OpenEXR: DWA Lossy Decoder Heap Out-of-Bounds Write

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, the DWA lossy decoder constructs temporary per-component block pointers using signed 32-bit arithmetic. Fo...

CVE-2026-34589

OpenEXR vulnerability CVE-2026-34589 involves an integer overflow in the DWA lossy decoder. From 3.2.0 to before 3.2.7, 3.3.0 to before 3.3.9, and 3.4.0 to before 3.4.9, the decoder computes per-component block pointers with signed 32-bit arithmetic, which can overflow for large widths and cause ...

CVE-2026-34589

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, the DWA lossy decoder constructs temporary per-component block pointers using signed 32-bit arithmetic. Fo...

CVE-2026-34379 OpenEXR has a misaligned write in LossyDctDecoder_execute leading to undefined behavior (DWA/DWAB decompression)

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, a misaligned memory write vulnerability exists in LossyDctDecoderexecute in...

CVE-2026-34379

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, a misaligned memory write vulnerability exists in LossyDctDecoderexecute in...

CVE-2026-34379

CVE-2026-34379 affects OpenEXR across 3.2.x, 3.3.x, and 3.4.x: a misaligned memory write in LossyDctDecoder_execute() for FLOAT channels during in-place HALF→FLOAT conversion. The decoder casts an unaligned uint8_t* row pointer to float* and writes, causing undefined behavior and potential crash ...

PT-2026-30658

Name of the Vulnerable Software and Affected Versions OpenEXR versions 3.2.0 through 3.2.6, version 3.3.9, and version 3.4.9 Description A memory write issue exists in the LossyDctDecoder execute function within src/lib/OpenEXRCore/internal dwa decoder.h:749 when decoding DWA or DWAB-compressed E...

PT-2026-30663

Name of the Vulnerable Software and Affected Versions OpenEXR versions 3.2.0 through 3.2.6, 3.3.9, and 3.4.9 Description OpenEXR, an image storage format used in the motion picture industry, contains a flaw in the DWA lossy decoder. Specifically, the decoder uses signed 32-bit arithmetic to creat...

JLSEC-2025-114 `dwa_uncompress` in `libavcodec/exr.c` in FFmpeg 4.4 allows an out-of-bounds array access because...

dwauncompress in libavcodec/exr.c in FFmpeg 4.4 allows an out-of-bounds array access because dccount is not strictly checked...