CVE-2026-41927

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

No CVSS.

References

Link	Resource
https://mstreet97.github.io/security-research/iot/vulnerability-disclosure/ai-assisted-research/cybersecurity/cve/2026/05/04/Teaching_the_Machine_Where_to_Look.html
https://www.made-in-china.com/showroom/yeapook/#:~:text=Established%20in%202015.%2CDistrict%2C%20Shenzhen%2C%20Guangdong%2C%20China
https://www.vulncheck.com/advisories/wdr201a-wifi-extender-stack-based-buffer-overflow-via-firewall-cgi

Configurations

No configuration.

History

04 May 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-04 20:16

Updated : 2026-06-17 10:47

NVD link : CVE-2026-41927

Mitre link : CVE-2026-41927

CVE.ORG link : CVE-2026-41927

JSON object : View

Products Affected

No product.

CWE

CWE-121

Stack-based Buffer Overflow

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