7.7
High
CVE-2026-120208 libheif 1.18.0 before 1.23.3 contains a heap-based buffer overflow vulnerability in…
Description
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| libheif 1.18 | 1.18.0 → < 1.23.3 | 1.23.3 |
Other CVEs of libheif
The 34 CVEs of libheif →
CVE-2026-84450
libheif is a HEIF and AVIF file format decoder and encoder
4.3
Medium
CVE-2026-84449
libheif is a HEIF and AVIF file format decoder and encoder
3.7
Low
CVE-2026-84451
libheif is a HEIF and AVIF file format decoder and encoder
6.5
Medium
CVE-2026-84447
libheif is a HEIF and AVIF file format decoder and encoder
7.5
High