CVE-2026-21124: Input Validation
Improper input validation in getting cover image in libsimba.heifdec.media.samsung.so prior to SMR Oct-2026 Release 1 allows local attackers to potentially execute arbitrary code.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
libsimba.heifdec.media.samsung.soto a version that resolves this vulnerability.Patch SMR Oct-2026 Release 1
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Systems using Samsung libsimba.heifdec.media.samsung.so before SMR Oct-2026 Release 1 are affected. Exploitation is local, so it is relevant where an attacker can execute code or otherwise operate locally on the device.
What does an attacker need to exploit it?
The CVSS vector indicates local access is required. It does not require privileges or user interaction, and the attack complexity is low.
What is the potential impact?
A successful exploit may allow arbitrary code execution. The vulnerability is rated high severity with a CVSS 4.0 score of 8.6 and can affect confidentiality, integrity, and availability.
How can this be remediated?
Update to Samsung SMR Oct-2026 Release 1 or a later release containing the fix.