PT-2026-134527

CVE-2026-120208

Published

2026-10-31

Updated

2026-11-09

Description by

CVSS 4.0

7.7

High

MetricsAV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions libheif versions 1.18.0 through 1.23.2

Description A heap-based buffer overflow occurs in the unc decoder mixed interleave::processTile() function. This issue is triggered when a HEIF file is processed with chroma components of unequal bit depths, such as 16-bit Cb and 8-bit Cr. This allows an attacker to perform out-of-bounds writes past the Cr plane, which could lead to arbitrary code execution within image-processing pipelines.

Recommendations Update libheif to version 1.23.3 or later.

Exploitability

Exploit

Fix

Impacts

Researchers

Alex Thomas

Poppo25

Wordfence Argus

Vendors

Affected products

Weakness enumeration