CVE-2026-41927 — WDR201A WiFi Extender Stack-Based Buffer Overflow via firewall.cgi
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains a stack-based buffer overflow vulnerability in the firewall.cgi and makeRequest.cgi binaries that allows unauthen…
Published: 2026-05-04 · CVSS: 8.3 · CVSS 4.0
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains a stack-based buffer overflow vulnerability in the firewall.cgi and makeRequest.cgi binaries that allows unauthenticated attackers to overwrite the saved return address by sending a POST request with a Content-Length header exceeding 512 bytes. Attackers can exploit insufficient length validation in the fgets() call to achieve arbitrary code execution through return-oriented programming or return-to-libc techniques.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7