Stack-based buffer overflow in libril_sem.so prior to SMR Aug-2026 Release 1 allows privileged local attackers to execute arbitrary code.

Metrics

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 High

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.

The EPSS score is 0.00127.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Samsung Mobile
  • Samsung Mobile Devices

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Samsung Mobile
  • Samsung Mobile Devices
References
Link Providers
https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=08 cve-icon
History

Mon, 10 Aug 2026 10:15:00 +0000

Type Values Removed Values Added
Title Stack-Based Buffer Overflow in Samsung Mobile Device libril_sem.so
Weaknesses CWE-121

Mon, 10 Aug 2026 09:45:00 +0000

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

Mon, 10 Aug 2026 08:30:00 +0000

Type Values Removed Values Added
Description Stack-based buffer overflow in libril_sem.so prior to SMR Aug-2026 Release 1 allows privileged local attackers to execute arbitrary code.
References
Metrics cvssV4_0

{'score': 8.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: SamsungMobile

Published:

Updated: 2026-08-10T07:41:24.700Z

Reserved: 2025-12-11T01:33:35.823Z

Link: CVE-2026-21068

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-10T10:00:04Z