SEPTEMBER 13, 2026
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Case File

CVE-2026-54240

HIGH · CVSS 7.4 EPSS 0.24% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-11 · Last synced 2026-09-13

CyberRota Analysis

AI-Generated

Versions of libde265 prior to 1.1.1 are vulnerable to an integer overflow due to improper handling of signed 32-bit arithmetic when processing large HEVC streams, which can lead to out-of-bounds heap reads or writes. This vulnerability may result in data disclosure, memory corruption, or crashes of the decoder. Organizations using affected versions of libde265 should prioritize upgrading to version 1.1.1 to mitigate these risks.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-54240
Severity
HIGH
CVSS
7.4
EPSS
0.24%

Original NVD Description

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.