Use-after-free in HEIF Image Extension - CVE-2026-100204
Published: November 10, 2026
Vulnerability identifier: #VU164608
CSH Severity: Medium
CVSS v4: 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]
CVE-ID: CVE-2026-100204
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
HEIF Image Extension
How to mitigate CVE-2026-100204
Install security update from vendor's website.
HEIF Image Extension - update to 1.2.62.0