SB20261110347 - Use-after-free in HEIF Image Extension
Published: November 10, 2026
Security Bulletin ID
SB20261110347
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-100204)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to execute arbitrary code on the affected system.
The vulnerability exists due to use-after-free in HEIF Image Extensions when previously freed memory is accessed. A remote attacker can exploit this invalid memory access, with user interaction, to execute arbitrary code on the affected system.
Remediation
Install update from vendor's website.