Memory corruption via improper auth-secret validation
Published Jul 8, 2025 · Updated Feb 26, 2026
An out-of-bounds write in Samsung Mobile Devices on Android 14 and 15 allows local privileged attackers to corrupt memory. The KnoxVault trustlet checks an authentication secret without proper input validation, allowing the check to write beyond its intended memory bounds. Reaching the flaw requires local privileged access; the published record does not establish code execution or privilege escalation.
Summary
What happened
An out-of-bounds write in Samsung Mobile Devices on Android 14 and 15 allows local privileged attackers to corrupt memory. The KnoxVault trustlet checks an authentication secret without proper input validation, allowing the check to write beyond its intended memory bounds. Reaching the flaw requires local privileged access; the published record does not establish code execution or privilege escalation.
The record
- CVE
- CVE-2025-20983
- Published
- Jul 8, 2025
- Updated
- Feb 26, 2026
- Vendor
- Samsung Electronics Co., Ltd.
- Product
- Samsung Mobile Devices
- Classifications
- CWE-787
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Jul 8, 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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