6.5
Medium
CVE-2026-32739 libheif is a HEIF and AVIF file format decoder and encoder
Description
libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 800-byte HEIF sequence file causes an infinite loop in Box_stts::get_sample_duration(), consuming 100% CPU indefinitely with zero progress, leading to DoS. The loop has no iteration limit or timeout and is triggered during file open (parsing) - before any user interaction or image decoding. The process stays alive (no crash, no error logged), making it invisible to crash-based monitoring. This issue has been fixed in version 1.22.0.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| libheif 1.22 | earliest → < 1.22.0 | 1.22.0 |
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