CVE-2026-88384

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Published 2026-09-24. Last modified 2026-09-24.