Authenticated code execution via unchecked SSID copy
Published Jan 14, 2025 · Updated Jan 15, 2025
Stack-based buffer overflow in Wavlink AC3000 M33A8.V5030.210505 allows remote authenticated users to execute code via HTTP. In adm.cgi, set_wzdgw4G copies the wlan_ssid2 POST value into a 0xa0-byte stack buffer with sprintf and no length check, overwriting the return address. A valid session cookie and page=wzdgw4G request are required; successful exploitation controls execution in the router management process.
Summary
What happened
Stack-based buffer overflow in Wavlink AC3000 M33A8.V5030.210505 allows remote authenticated users to execute code via HTTP. In adm.cgi, set_wzdgw4G copies the wlan_ssid2 POST value into a 0xa0-byte stack buffer with sprintf and no length check, overwriting the return address. A valid session cookie and page=wzdgw4G request are required; successful exploitation controls execution in the router management process.
The record
- CVE
- CVE-2024-39294
- Published
- Jan 14, 2025
- Updated
- Jan 15, 2025
- Vendor
- Wavlink
- Product
- AC3000 Tri-band Wi-Fi Router
- Classifications
- CWE-120, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 14, 2025CVE publishedPublication date reported by the CVE source.
- Jan 15, 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.
Weakness, pattern, technique
Public exploit references
- Cisco Talos authenticated HTTP overflow demonstrationproof 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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