Improper Input Validation in FacAtFunction Affects Samsung Product
CVE-2026-20981

5.4MEDIUM

Key Information:

Vendor

Samsung
Status
Samsung Devices
Vendor
CVE Published:
4 February 2026

What is CVE-2026-20981?

An improper input validation vulnerability in FacAtFunction allows a privileged physical attacker to execute arbitrary commands with system-level privileges. This flaw could lead to unauthorized control over system operations, posing significant security risks and affecting the integrity of sensitive data.

Affected Version(s)

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

References

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

CVSS V4

Score:
5.4
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Physical
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.