6.5
Medium
CVE-2026-49271 libheif is a HEIF and AVIF file format decoder and encoder
Description
libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit_offset + unit_size. Because the addition can wrap, a crafted HEIF file can pass the range check and then construct a vector from iterators outside the compressed item buffer, producing an out-of-bounds heap read and crash. Version 1.22.1 patches the issue.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| libheif 1.22 | earliest → < 1.22.1 | 1.22.1 |
Other CVEs of libheif
The 34 CVEs of libheif →
CVE-2026-120208
libheif 1.18.0 before 1.23.3 contains a heap-based buffer overflow vulnerability in…
7.7
High
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