Improper Input Validation in Samsung Media Libraries
CVE-2026-21126

6.9MEDIUM

Key Information:

Vendor

Samsung
Status
Samsung Devices
Vendor
CVE Published:
12 October 2026

What is CVE-2026-21126?

An improper input validation flaw in the libsimba.heifdec.media.samsung.so library prior to the SMR Oct-2026 Release 1 enables local attackers to manipulate input leading to out-of-bounds memory writes. This vulnerability can potentially allow unauthorized data modification or system instability, posing risks to affected devices.

Affected Version(s)

Samsung Mobile Devices SMR Oct-2026 Release in Android 14, 15, 16, 17

References

https://security.samsungmobile.com/securityUpdate.smsb?ye...

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.