SB20260120202 - Denial of service in libheif
Published: January 20, 2026
Security Bulletin ID
SB20260120202
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2025-43966)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 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
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.