CVE-2026-21157

Local Privileged Attackers Can Execute Arbitrary Activities via Bixby Input Validation Flaw

Published Oct 29, 2026 CVSS 4.0 · 8.3 High EPSS < 1% KEV · Not listed
Description
Improper input validation in Bixby prior to version 4.0.85.6 allows privileged local attackers to launch arbitrary activity.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Local Privileged Attackers Can Execute Arbitrary Activities via Bixby Input Validation Flaw
Weaknesses CWE-20
Type Values Removed Values Added
First Time appeared Samsung Mobile
Samsung Mobile bixby
Vendors & Products Samsung Mobile
Samsung Mobile bixby
Type Values Removed Values Added
Description Improper input validation in Bixby prior to version 4.0.85.6 allows privileged local attackers to launch arbitrary activity.
References
Metrics cvssV4_0

{'score': 8.3, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
SamsungMobile
Published
Updated
Oct 30, 2026, 3:55 AM
Reserved
Dec 11, 2025, 1:33 AM
Status
Awaiting Analysis
Published
Oct 29, 2026, 1:17 AM
Modified
Oct 30, 2026, 4:18 AM