CVE-2026-21068: CWE-121: Stack-based Buffer Overflow in Samsung Mobile Samsung Mobile Devices
Stack-based buffer overflow in libril_sem.so prior to SMR Aug-2026 Release 1 allows privileged local attackers to execute arbitrary code.
AI Analysis
Technical Summary
This vulnerability is a stack-based buffer overflow in the libril_sem.so library used by Samsung Mobile Devices. It affects versions before the SMR Aug-2026 Release 1. The flaw allows attackers with privileged local access to execute arbitrary code, potentially compromising device integrity. The CVSS 4.0 vector indicates low attack complexity, no user interaction, and high impacts on confidentiality, integrity, and availability. No vendor advisory or patch details have been provided to confirm remediation status.
Potential Impact
Successful exploitation allows a privileged local attacker to execute arbitrary code on the affected device, potentially leading to full compromise of the device's security properties including confidentiality, integrity, and availability. The vulnerability does not appear exploitable remotely and requires high privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict privileged local access to trusted users only.
CVE-2026-21068: CWE-121: Stack-based Buffer Overflow in Samsung Mobile Samsung Mobile Devices
Description
Stack-based buffer overflow in libril_sem.so prior to SMR Aug-2026 Release 1 allows privileged local attackers to execute arbitrary code.
CVSS v4.0
Score 8.4high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a stack-based buffer overflow in the libril_sem.so library used by Samsung Mobile Devices. It affects versions before the SMR Aug-2026 Release 1. The flaw allows attackers with privileged local access to execute arbitrary code, potentially compromising device integrity. The CVSS 4.0 vector indicates low attack complexity, no user interaction, and high impacts on confidentiality, integrity, and availability. No vendor advisory or patch details have been provided to confirm remediation status.
Potential Impact
Successful exploitation allows a privileged local attacker to execute arbitrary code on the affected device, potentially leading to full compromise of the device's security properties including confidentiality, integrity, and availability. The vulnerability does not appear exploitable remotely and requires high privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict privileged local access to trusted users only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- SamsungMobile
- Date Reserved
- 2025-12-11T01:33:35.823Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a798b48bf8831d53957fd48
Added to database: 08/10/2026, 08:26:48 UTC
Last enriched: 08/10/2026, 08:41:33 UTC
Last updated: 08/11/2026, 02:40:59 UTC
Views: 11
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