Local code execution via unchecked memory write
Published May 7, 2025 · Updated Feb 26, 2026
Out-of-bounds write in Samsung Electronics libsavscmn.so before Android 15 allows local users to execute arbitrary code. The library fails to validate input before writing beyond an allocated buffer; Samsung has not disclosed the affected parser, function, or input format. Local access is required, and successful exploitation runs code in the process that loads the library.
Summary
What happened
Out-of-bounds write in Samsung Electronics libsavscmn.so before Android 15 allows local users to execute arbitrary code. The library fails to validate input before writing beyond an allocated buffer; Samsung has not disclosed the affected parser, function, or input format. Local access is required, and successful exploitation runs code in the process that loads the library.
The record
- CVE
- CVE-2025-20979
- Published
- May 7, 2025
- Updated
- Feb 26, 2026
- Vendor
- Samsung Electronics
- Product
- libsavscmn.so
- Classifications
- CWE-787
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 7, 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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