CVE-2025-14992
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?
This vulnerability is a stack-based buffer overflow in the Tenda AC18 router firmware version 15.03.05.05. It occurs in the HTTP Request Handler component, specifically in the function strcpy within the file /goform/GetParentControlInfo. When the "mac" parameter is supplied with excessively large data, the unsafe strcpy function copies this data without proper bounds checking, causing a buffer overflow on the stack. This flaw allows remote attackers to potentially execute arbitrary code or cause a denial of service by sending specially crafted HTTP requests. [1, 2]
How can this vulnerability impact me? :
This vulnerability can impact you by allowing remote attackers to execute arbitrary code on your Tenda AC18 router or cause a denial of service (DoS) condition. Because the exploit can be performed remotely without authentication, attackers can compromise the confidentiality, integrity, and availability of the device. This could lead to unauthorized control over the router, disruption of network services, or further attacks on connected systems. [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 to the endpoint /goform/GetParentControlInfo for unusually large or malformed 'mac' parameter values that could trigger the stack-based buffer overflow. Detection can involve capturing and analyzing network traffic for such suspicious requests. Specific commands might include using tools like curl or wget to send crafted requests to the vulnerable endpoint to test for response anomalies. For example, a command to test could be: curl -v 'http://<router-ip>/goform/GetParentControlInfo?mac=<very_long_string>'. Additionally, network packet capture tools like tcpdump or Wireshark can be used to monitor traffic to this endpoint for suspicious payloads. [1, 2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include avoiding exposure of the vulnerable Tenda AC18 router firmware version 15.03.05.05 to untrusted networks, especially the internet, to prevent remote exploitation. Since no known countermeasures or patches currently exist, it is recommended to replace the affected device with a non-vulnerable model or firmware version. Network-level protections such as firewall rules blocking access to the /goform/GetParentControlInfo endpoint or filtering malformed HTTP requests targeting the 'mac' parameter can also help reduce risk. [2]