CVE-2026-21019 PUBLISHED

Assigner: SamsungMobile
Reserved: 11.12.2025 Published: 13.05.2026 Updated: 13.05.2026

Improper input validation in FacAtFunction in Galaxy Watch prior to SMR May-2026 Release 1 allows local attacker to execute arbitrary code with system privilege.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 8.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Samsung Mobile
Product	Samsung Mobile Devices
Versions	Default: affected unaffected from SMR May-2026 Release in Android Watch 14, 16 to * (excl.)

References

https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=05

Problem Types

CWE-20: Improper Input Validation