CVE-2026-109109
CriticalCVSS 10.0Exploitation Probability (EPSS)
Low risk47th percentile - higher than 47% of all known CVEs
Summary
The Wavlink WL-WN530BE1-A router version 251117 contains a stack-based buffer overflow in the strcpy function of /cgi-bin/ExportAllSettings.cgi in the Settings Export CGI component. Manipulating the HTTP_COOKIE/X-Cmd argument allows remote attack.
Risk Assessment
Remote code execution or device crash is possible. The exploit is publicly available and may be used by attackers.
Recommendation
Apply the vendor patch when available, and until then restrict access to the router's CGI interface from untrusted networks.
Other vulnerabilities in Wavlink WL-WN530BE1-A
See all- CVE-2026-120198Critical
A vulnerability was found in WAVLINK WL-WN530BE1-A V251117 in the con_check_read_finish function of /protocol.csp. Manipulation of the group_name/IP-FROM argument leads to command injection. The attack can be launched remotely and the exploit has been publicly disclosed.
- CVE-2026-113802Critical
Wavlink WL-WN530BE1-A firmware through M30BE1_V251117 contains an OS command injection vulnerability in the sub_23B54 function of the ioos binary, which passes the unsanitized file_id parameter of /protocol.csp?opt=ovpn_file requests with type=del to popen(). A remote unauthenticated attacker can send a forged IP-FROM: 127.0.0.1 header to bypass login and execute arbitrary commands as root.
- CVE-2026-109108Critical
The Wavlink WL-WN530BE1-A router version 251117 contains a vulnerability in the popen function of /cgi-bin/uploadVpn.cgi. Manipulating the Type argument leads to OS command injection, and the attack can be performed remotely.
Original NVD description (English source)
A vulnerability was detected in Wavlink WL-WN530BE1-A 251117. This vulnerability affects the function strcpy of the file /cgi-bin/ExportAllSettings.cgi of the component Settings Export CGI. Performing a manipulation of the argument HTTP_COOKIE/X-Cmd results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS