Out-of-bounds read in libde265 - CVE-2026-45383
Published: May 19, 2026
Vulnerability identifier: #VU131872
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-45383
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to an out-of-bounds read in decoder_context::decode_slice_unit_WPP() when decoding a crafted WPP HEVC slice. A remote attacker can supply crafted PPS/SPS headers that cause out-of-bounds CtbAddrRStoTS access to cause a denial of service.
User interaction is required to open or process a crafted HEIF/HEVC file.
Affected software
libde265
How to mitigate CVE-2026-45383
Install security update from vendor's website.
libde265 - update to 1.0.19