Integer overflow in libheif - #VU128023
Published: April 27, 2026
Vulnerability identifier: #VU128023
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to overwrite image data.
The vulnerability exists due to integer overflow in readTiledSeparate() in heifio/decoder_tiff.cc when decoding crafted tiled TIFF images. A remote attacker can trick the victim into processing a specially crafted TIFF image to overwrite image data.
User interaction is required to process the crafted image.
Affected software
libheif
Remediation
Install security update from vendor's repository.