CVE-2026-21124

State: Published
Severity: 8.6 High
Published: Oct 12, 2026
Updated: Oct 13, 2026
Reserved: Dec 11, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	8.6 High	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	SamsungMobile

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
Samsung Mobile DevicesSamsung Mobile	SMR Oct-2026 Release in Android 14, 15, 16, 17 and laterNot affected

References

https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=10

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