VDB
CVE-2026-32739
CVE-2026-32739
PUBLISHED
CVSS 6.5 MEDIUM
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.
EPSS 0.05% · 15.1th percentile
Risk Scores
CVSS v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score
0.05%
15.1th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| strukturag | libheif | < 1.22.0 |
Timeline
- May 19, 2026 CVE Published
- May 19, 2026 CVE Updated
- May 19, 2026 PoC Published
- May 20, 2026 EPSS Score
- May 20, 2026 Coalition ESS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
- May 25, 2026 EPSS Score
- May 26, 2026 EPSS Score
- May 27, 2026 EPSS Score