CVE-2025-14992
Unknown Unknown - Not Provided
Stack-Based Buffer Overflow in Tenda AC18 HTTP Handler

Publication date: 2025-12-21

Last updated on: 2025-12-21

Assigner: VulDB

Description
A security vulnerability has been detected in Tenda AC18 15.03.05.05. The impacted element is the function strcpy of the file /goform/GetParentControlInfo of the component HTTP Request Handler. The manipulation of the argument mac leads to stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used.
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Meta Information
Published
2025-12-21
Last Modified
2025-12-21
Generated
2026-06-16
AI Q&A
2025-12-21
EPSS Evaluated
2026-06-15
NVD
CVE-2025-14992
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
tenda ac18 15.03.05.05
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Exploitability
CWE
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KEV
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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).
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Executive Summary

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]

Impact Analysis

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]

Detection Guidance

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]

Mitigation Strategies

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]

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