Authenticated code execution via unchecked stack copy
Published Jul 6, 2025 · Updated Jul 7, 2025
Stack-based buffer overflow in Belkin F9K1122 1.00.33 allows remote authenticated users to crash the device via a crafted HTTP POST. formConnectionSetting copies the max_Conn and timeOut values into a stack-local buffer without checking length, allowing overwrite of the function return address. Low-privilege access to the browser-based management interface is required; the published proof of concept demonstrates a persistent service crash, and return-address control supports arbitrary code execution.
Summary
What happened
Stack-based buffer overflow in Belkin F9K1122 1.00.33 allows remote authenticated users to crash the device via a crafted HTTP POST. formConnectionSetting copies the max_Conn and timeOut values into a stack-local buffer without checking length, allowing overwrite of the function return address. Low-privilege access to the browser-based management interface is required; the published proof of concept demonstrates a persistent service crash, and return-address control supports arbitrary code execution.
The record
- CVE
- CVE-2025-7090
- Published
- Jul 6, 2025
- Updated
- Jul 7, 2025
- Vendor
- Belkin
- Product
- Belkin F9K1122
- Classifications
- CWE-119, CWE-121, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 6, 2025CVE publishedPublication date reported by the CVE source.
- Jul 7, 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=1.00.33
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
- F9K1122 formConnectionSetting HTTP POST proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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