CVE-2026-120208 (GCVE-0-2026-120208)

Vulnerability from cvelistv5 – Published: 2026-10-31 17:25 – Updated: 2026-11-02 17:45
VLAI
Title
libheif 1.18.0 before 1.23.3 Heap Buffer Overflow via unci Mixed-Interleave Decoder
Summary
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.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 17:09 UTC
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
strukturag libheif Affected: 1.18.0 , < 1.23.3 (semver)
Create a notification for this product.
Date Public
2026-09-01 00:00
Credits
Alex Thomas (Wordfence) poppo25 Wordfence Argus
Show details on NVD website
To clipboard 

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