Belkin Vulnerability Vendor: Belkin Product: F9K1122 Version: 1.00.33 Type: Stack Overflow Author: Jiaqian Peng Mail: pengjiaqian@iie.ac.cn Institution: Institute of Information Engineering, Chinese Academy of Sciences (IIE, CAS) Vulnerability Description Description: A stack overflow vulnerability was discovered in the firmware of Belkin routers, allowing remote attackers to crash the server. Stack Overflow: In the function, the parameter is directly provided by the attacker. If the input data is excessively long, it triggers a stack overflow, potentially enabling the attacker to execute arbitrary code via control over . Code Snippet Supplement Suggestion: To prevent such issues, string content should be validated and checked during the input extraction phase. PoC Payload: Set to (long string). The router will crash. Result Result: The target router crashes and is unable to provide stable and continuous service.