Adjacent out-of-bounds write via improper input validation
Published Sep 9, 2026 · Updated Sep 10, 2026
Improper input validation in Samsung Mobile Devices before SMR Sep-2026 Release 1 allows adjacent attackers to write out-of-bounds memory. The wpa_supplicant component fails to validate an unspecified adjacent-network input before a memory write, but Samsung has not disclosed the affected parser or bounds calculation. Exploitation requires adjacency, no privileges, no user interaction, high complexity, and additional attack conditions; the bounded result is an out-of-bounds memory write.
Summary
What happened
Improper input validation in Samsung Mobile Devices before SMR Sep-2026 Release 1 allows adjacent attackers to write out-of-bounds memory. The wpa_supplicant component fails to validate an unspecified adjacent-network input before a memory write, but Samsung has not disclosed the affected parser or bounds calculation. Exploitation requires adjacency, no privileges, no user interaction, high complexity, and additional attack conditions; the bounded result is an out-of-bounds memory write.
The record
- CVE
- CVE-2026-21094
- Published
- Sep 9, 2026
- Updated
- Sep 10, 2026
- Vendor
- Samsung Electronics Co., Ltd.
- Product
- Samsung Mobile Devices
- Classifications
- CWE-20
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 9, 2026CVE publishedPublication date reported by the CVE source.
- Sep 10, 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?
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What conditions does exploitation require?
What is affected?
Published CVSS scores
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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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