#VU121773 NULL pointer dereference in libheif - CVE-2025-43966

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU121773

#VU121773 NULL pointer dereference in libheif - CVE-2025-43966

Published: January 20, 2026


Vulnerability identifier: #VU121773
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/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: CVE-2025-43966
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
libheif
Software vendor:
struktur AG

Description

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to NULL pointer dereference within the ImageItem_iden() function in image-items/iden.cc. A remote attacker can pass a specially crafted file to the application and perform a denial of service attack. 


Remediation

Install update from vendor's website.

External links