high7.4
CVE-2026-54240
libde265 is an open source implementation of the h.265 video codec.
Impact
libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.1.1 use signed 32-bit arithmetic to calculate pixel offsets, allowing a crafted HEVC stream with large image dimensions to trigger an integer overflow and cause out-of-bounds heap reads or writes, potentially disclosing data, corrupting memory, or crashing the decoder. Version 1.1.1 contains a patch.
Affected products
| Product | Affected versions |
|---|---|
| H.265 Video Codec. | before 1.1.1 |
Versions were read from the advisory text. No structured product data has been published for this record yet.