Allocation of Resources Without Limits or Throttling in libheif - #VU145241
Published: August 25, 2026
Vulnerability identifier: #VU145241
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in TiledHeader::set_parameters() when opening a crafted experimental tiled image. A remote attacker can send a specially crafted HEIF or AVIF file to cause a denial of service.
Only builds with the experimental tili feature enabled are vulnerable, and the allocation is triggered at file-open time.
Affected software
libheif
Remediation
Install security update from vendor's website.
libheif - update to 1.23.2