CVE-2026-120208
Published:October 31, 2026
Updated:November 04, 2026
libheif 1.18.0 before 1.23.3 contains a heap-based buffer overflow vulnerability in unc_decoder_mixed_interleave::processTile() that allows attackers to write out of bounds by supplying chroma components with unequal bit depths. Attackers can craft a HEIF file declaring, for example, 16-bit Cb and 8-bit Cr to trigger file-controlled heap writes past the Cr plane, potentially achieving code execution in image-processing pipelines.
Affected Packages
libheif (CONAN):
Affected version(s) >=1.18.1 <1.23.3Fix Suggestion:
Update to version 1.23.3libheif (CONDA):
Affected version(s) >=1.18.2 <1.23.3Fix Suggestion:
Update to version 1.23.3https://github.com/strukturag/libheif.git (GITHUB):
Affected version(s) >=v1.18.0-rc1 <v1.23.3Fix Suggestion:
Update to version v1.23.3Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Heap-based Buffer Overflow
EPSS
Base Score:
0.36