Authenticated command execution via unchecked SSID2G copy
Published Jan 14, 2025 · Updated Jan 14, 2025
Stack-based buffer overflow in Wavlink AC3000 M33A8.V5030.210505 allows remote authenticated users to execute arbitrary commands over HTTP. In wireless.cgi, set_wifi_basic_mesh() copies the arbitrary-length SSID2G POST value into a 0x78-byte stack buffer with sprintf and no bounds check. Administrator authentication and network access to the router's web interface are required; successful exploitation controls the function return address.
Summary
What happened
Stack-based buffer overflow in Wavlink AC3000 M33A8.V5030.210505 allows remote authenticated users to execute arbitrary commands over HTTP. In wireless.cgi, set_wifi_basic_mesh() copies the arbitrary-length SSID2G POST value into a 0x78-byte stack buffer with sprintf and no bounds check. Administrator authentication and network access to the router's web interface are required; successful exploitation controls the function return address.
The record
- CVE
- CVE-2024-39603
- Published
- Jan 14, 2025
- Updated
- Jan 14, 2025
- Vendor
- Wavlink
- Product
- AC3000 Tri-band Wi-Fi Router
- Classifications
- CWE-121, T1210
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Jan 14, 2025CVE publishedPublication date reported by the CVE source.
- Jan 14, 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=M33A8.V5030.210505
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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Cisco Talos SSID2G buffer-overflow proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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