AcademySoftwareFoundation OpenEXR 3.4.14 Attribute Parsing memcpy dataSize null pointer dereference

Summaryinfo

A vulnerability was found in AcademySoftwareFoundation OpenEXR 3.4.14. It has been rated as problematic. The impacted element is the function memcpy of the component Attribute Parsing. The manipulation of the argument dataSize leads to null pointer dereference. This vulnerability is listed as CVE-2026-88384. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in AcademySoftwareFoundation OpenEXR 3.4.14. This issue affects the function memcpy of the component Attribute Parsing. The manipulation of the argument dataSize with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

OpenEXR 3.4.14 contains a NULL Pointer Dereference in the C++ attribute parsing path. A specially crafted EXR file containing an unknown-type attribute with dataSize set to zero causes the parser to create an opaque attribute with a NULL packed_data pointer. The OpaqueAttribute constructor passes the NULL pointer to memcpy() without validating the zero-size condition, resulting in undefined behavior and process termination, leading to denial of service.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-88384 since 09/10/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• AcademySoftwareFoundation

Name

• OpenEXR

Version

• 3.4.14

License

• open-source

Website

• Product: https://github.com/AcademySoftwareFoundation/openexr/

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