CVE-2026-54240: 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…

PriorityP344high7.4CVSS 3.1

AVNACHPRNUINSUCHINAH

EPSS

0.39%

32.3th percentile

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

2 ranges

Vendor	Product	Version range	Fixed in
strukturag	libde265	< 1.1.1	1.1.1
ubuntu	libde265	—	—

CVSS provenance

nvdv3.17.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H

vendor_ubuntu3.3LOW

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