Security Advisory

CVE-2026-32739

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-19 19:10:03

Last updated 2026-05-20 13:07:09

Assigner GitHub_M

CVSS score 6.5

State PUBLISHED

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.

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