VDB
CVE-2026-54240
CVE-2026-54240
PUBLISHED
CVSS 7.4 HIGH
Reported by GitHub_M · Published September 11, 2026
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.
Risk Scores
CVSS 3.1
7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| strukturag | libde265 | < 1.1.1 |
| strukturag | libde265 | < 1.1.1, < 1.1.1 |
| alpine | libde265 | 0, 0, 0 |
Timeline
- Sep 11, 2026 CVE Published
- Sep 12, 2026 EPSS Score
- Sep 14, 2026 CVE Updated
- Sep 17, 2026 EPSS Score
- Sep 18, 2026 EPSS Score
References
- https://github.com/strukturag/libde265/security/advisories/GHSA-ccfw-29x7-rrx3 x_refsource_CONFIRM