CVE-2026-54240 libde265 - Integer Overflow

libde265 < 1.1.1 contains an integer overflow caused by signed 32-bit arithmetic in pixel offset calculations, letting attackers trigger out-of-bounds heap reads or writes, exploit requires crafted HEVC stream with large image dimensions.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.39% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Integer Overflow
Impact
Information Disclosure, Data Tampering, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
Published
11 September 2026
Updated
15 October 2026
Weakness
CWE-190

Vendor fix

Update to version 1.1.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs