CVE-2025-14993
Remote Stack-Based Buffer Overflow in Tenda AC18 HTTP Handler
Publication date: 2025-12-21
Last updated on: 2025-12-21
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| tenda | ac18 | 15.03.05.05 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-119 | The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
| CWE-121 | A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2025-14993 is a stack-based buffer overflow vulnerability in the Tenda AC18 router firmware version 15.03.05.05. It occurs in the HTTP Request Handler component, specifically in the sprintf function of the /goform/SetDlnaCfg endpoint. When the 'scanList' parameter is manipulated with excessively large or crafted input, it causes a buffer overflow on the stack. This overflow can be exploited remotely by attackers to execute arbitrary code or cause a denial of service (DoS) condition. [1, 2]
How can this vulnerability impact me? :
This vulnerability can allow remote attackers to execute arbitrary code on the affected Tenda AC18 router or cause a denial of service (DoS), potentially compromising the device's confidentiality, integrity, and availability. Since exploitation requires no local access or physical interaction and is considered easy with public proof-of-concept exploits available, it poses a significant security risk to users of the affected device. [1, 2]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by monitoring HTTP requests sent to the endpoint /goform/SetDlnaCfg on Tenda AC18 routers running firmware version 15.03.05.05. Specifically, detection involves identifying requests where the "scanList" parameter contains excessively large or malformed data that could trigger the stack-based buffer overflow. Network intrusion detection systems (NIDS) or web application firewalls (WAF) can be configured to alert on unusually large or suspicious payloads targeting this endpoint. Additionally, manual inspection or scripting can be used to send crafted HTTP requests to test for the vulnerability. However, no specific detection commands are provided in the resources. [1, 2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include replacing the affected Tenda AC18 router running firmware version 15.03.05.05 with an alternative device, as no known countermeasures or patches currently exist. Limiting or blocking remote access to the /goform/SetDlnaCfg endpoint via firewall rules or network segmentation may reduce exposure. Monitoring for exploit attempts and disabling unnecessary services on the device can also help. Since the exploit is publicly available and easy to execute remotely, urgent replacement or isolation of the vulnerable device is recommended. [2]