Protected-data access via out-of-bounds trustlet access
Published Sep 3, 2025 · Updated Feb 26, 2026
Out-of-bounds access in the TIGERF trustlet on Samsung Mobile Devices before SMR Apr-2023 Release 1 exposes protected data to local users. The trustlet accesses memory beyond a buffer's end because it does not properly validate attacker-controlled input. Exploitation requires local access with high privileges and can disclose or modify protected data without interrupting service.
Summary
What happened
Out-of-bounds access in the TIGERF trustlet on Samsung Mobile Devices before SMR Apr-2023 Release 1 exposes protected data to local users. The trustlet accesses memory beyond a buffer's end because it does not properly validate attacker-controlled input. Exploitation requires local access with high privileges and can disclose or modify protected data without interrupting service.
The record
- CVE
- CVE-2023-21477
- Published
- Sep 3, 2025
- Updated
- Feb 26, 2026
- Vendor
- Samsung Electronics Co., Ltd.
- Product
- Samsung Mobile Devices
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Sep 3, 2025CVE publishedPublication date reported by the CVE source.
- Feb 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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