CVE-2026-21157 PUBLISHED

Assigner: SamsungMobile
Reserved: 11.12.2025 Published: 29.10.2026 Updated: 29.10.2026

Improper input validation in Bixby prior to version 4.0.85.6 allows privileged local attackers to launch arbitrary activity.

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS Score: 8.3

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	Low	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

Vendor	Samsung Mobile
Product	Bixby
Versions	Default: affected unaffected from 4.0.85.6 to * (excl.)