Improper input validation in removing style tag in libsubextractor.so prior to SMR Sep-2026 Release 1 allows local attackers to write out-of-bounds memory.

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact Low

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.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

No data.

No data.

No data.

References
Link Providers
https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=09 cve-icon cve-icon
History

Wed, 09 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
Title Out-of-Bounds Write in libsubextractor.so on Samsung Devices
Weaknesses CWE-20
CWE-787

Wed, 09 Sep 2026 05:00:00 +0000

Type Values Removed Values Added
Description Improper input validation in removing style tag in libsubextractor.so prior to SMR Sep-2026 Release 1 allows local attackers to write out-of-bounds memory.
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: SamsungMobile

Published: 2026-09-09T04:47:36.922Z

Updated: 2026-09-09T04:47:36.922Z

Reserved: 2025-12-11T01:33:35.826Z

Link: CVE-2026-21089

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-09T05:17:20.947

Modified: 2026-09-09T15:45:14.503

Link: CVE-2026-21089

cve-icon Redhat

No data.