CVE-2026-41927highCWE-121

CVE-2026-41927: high-severity vulnerability in Shenzhen Yipu Commercial and Trading Co., Ltd…

WDR201A WiFi Extender Stack-Based Buffer Overflow via firewall.cgi

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41Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 8.3epss 0.4%
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.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
Affected products
Shenzhen Yipu Commercial and Trading Co., Ltd · WDR201A WiFi Extender
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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