libheif is a HEIF and AVIF file format decoder and encoder.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. May 19, 2026 · NIST NVD

   Detected

   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 proc

2. Jul 24, 2026 · NIST NVD

   Updated

   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 proc

Affected

• cpe struktur/libheifversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-32739

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-32739

  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 iteratio

  nvd.nist.gov

References

• Release Notes · github.com
• Exploit · github.com