CVE-2026-21104: CWE-122: Heap-based Buffer Overflow in Samsung Mobile Samsung Mobile Devices
CVE-2026-21104 is a heap-based buffer overflow vulnerability in the KnoxVault trustlet on Samsung Mobile Devices prior to the SMR September 2026 Release 1. It allows local privileged attackers to execute arbitrary code. The vulnerability has a high severity score of 7.1 and requires high attack complexity and privileges. No official patch or remediation information is currently available.
AI Analysis
Technical Summary
This vulnerability is a heap-based buffer overflow in the KnoxVault trustlet component of Samsung Mobile Devices. It affects versions prior to the SMR September 2026 Release 1. The flaw allows local attackers with high privileges to execute arbitrary code, potentially compromising the device. The CVSS 4.0 score is 7.1, indicating a high severity with local attack vector, high attack complexity, and no user interaction required. No vendor advisory or patch details have been provided yet.
Potential Impact
Local privileged attackers can exploit this vulnerability to execute arbitrary code on affected Samsung Mobile Devices, potentially leading to full compromise of the KnoxVault trustlet environment. The high CVSS score reflects significant impact if exploited. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local privileged access to trusted users only and monitor for suspicious activity related to KnoxVault components.
CVE-2026-21104: CWE-122: Heap-based Buffer Overflow in Samsung Mobile Samsung Mobile Devices
Description
CVE-2026-21104 is a heap-based buffer overflow vulnerability in the KnoxVault trustlet on Samsung Mobile Devices prior to the SMR September 2026 Release 1. It allows local privileged attackers to execute arbitrary code. The vulnerability has a high severity score of 7.1 and requires high attack complexity and privileges. No official patch or remediation information is currently available.
CVSS v4.0
Score 7.1high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a heap-based buffer overflow in the KnoxVault trustlet component of Samsung Mobile Devices. It affects versions prior to the SMR September 2026 Release 1. The flaw allows local attackers with high privileges to execute arbitrary code, potentially compromising the device. The CVSS 4.0 score is 7.1, indicating a high severity with local attack vector, high attack complexity, and no user interaction required. No vendor advisory or patch details have been provided yet.
Potential Impact
Local privileged attackers can exploit this vulnerability to execute arbitrary code on affected Samsung Mobile Devices, potentially leading to full compromise of the KnoxVault trustlet environment. The high CVSS score reflects significant impact if exploited. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local privileged access to trusted users only and monitor for suspicious activity related to KnoxVault components.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- SamsungMobile
- Date Reserved
- 2025-12-11T01:33:35.829Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa13d67acd9273b493465b2
Added to database: 09/09/2026, 11:05:11 UTC
Last enriched: 09/09/2026, 11:07:43 UTC
Last updated: 09/09/2026, 11:32:20 UTC
Views: 2
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