Out-of-bounds read in libheif - #VU131967
Published: May 20, 2026
Vulnerability identifier: #VU131967
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: struktur AG
Affected software:
libheif
libheif
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to out-of-bounds read in find_exif_tag / read32 in the EXIF parsing path when processing a crafted JPEG file containing a short EXIF TIFF payload. A remote attacker can send a specially crafted JPEG file to disclose sensitive information.
The out-of-bounds read occurs in release-like builds with assertions disabled.
Remediation
Install security update from vendor's website.