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

Attack Vector Local

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Samsung Mobile Bixby affected
Version Status Constraints
4.0.85.6 unaffected < *

No data.

No data.

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Vendors Products
Samsung Mobile Subscribe
Bixby Subscribe

Project Subscriptions

Vendors Products
Samsung Mobile Subscribe
Bixby Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=07 cve-icon cve-icon
History

Thu, 29 Oct 2026 03:45:00 +0000

Type Values Removed Values Added
Title Local Privileged Attackers Can Execute Arbitrary Activities via Bixby Input Validation Flaw
Weaknesses CWE-20

Thu, 29 Oct 2026 03:00:00 +0000

Type Values Removed Values Added
First Time appeared Samsung Mobile
Samsung Mobile bixby
Vendors & Products Samsung Mobile
Samsung Mobile bixby

Thu, 29 Oct 2026 01:15:00 +0000

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: SamsungMobile

Published:

Updated: 2026-10-29T12:35:23.592Z

Reserved: 2025-12-11T01:33:35.837Z

Link: CVE-2026-21157

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-29T01:17:23.187

Modified: 2026-10-29T01:17:23.187

Link: CVE-2026-21157

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-29T03:30:15Z

Weaknesses