Authenticated code execution via unchecked password-hint copy
Published Aug 23, 2025 · Updated Aug 25, 2025
Stack-based buffer overflow in six Linksys RE-series extenders allows remote authenticated users to execute code through an admin request. The setSysAdm handler in mod_form.so copies an oversized admpasshint value into a fixed-size stack variable without bounds checking, overwriting the function return address. A valid management session is required; the published request demonstrates a persistent device crash, while return-address control enables code execution.
Summary
What happened
Stack-based buffer overflow in six Linksys RE-series extenders allows remote authenticated users to execute code through an admin request. The setSysAdm handler in mod_form.so copies an oversized admpasshint value into a fixed-size stack variable without bounds checking, overwriting the function return address. A valid management session is required; the published request demonstrates a persistent device crash, while return-address control enables code execution.
The record
- CVE
- CVE-2025-9358
- Published
- Aug 23, 2025
- Updated
- Aug 25, 2025
- Vendor
- Linksys
- Product
- RE6250
- Classifications
- CWE-119, CWE-121, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 23, 2025CVE publishedPublication date reported by the CVE source.
- Aug 25, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.013.001
- Affected versionversion=1.0.04.001
- Affected versionversion=1.0.04.002
- Affected versionversion=1.1.05.003
- Affected versionversion=1.2.07.001
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Authenticated setSysAdm admpasshint crash proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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