CVE-2026-41927

HighCVSS 8.3/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 4.0 8.3/10CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness enumeration

CWE-121

Affected software

No affected versions have been published.

Timeline

Published
May 4, 2026
Last modified
Jun 17, 2026
NVD status
Deferred

Related CVEs from 2026

CVE-2026-419285.3Vvveb before 1.0.8.2 contains an information disclosure vulnerability in the cron controller that allows unauthenticated attackers to retrieCVE-2026-419296.1Vvveb before 1.0.8.2 contains an unauthenticated reflected cross-site scripting vulnerability in the visual editor preview renderer that allCVE-2026-41937.5A security vulnerability has been detected in D-Link DIR-823G 1.0.2B05. The affected element is the function GetDDNSSettings/GetDeviceDomainCVE-2026-419309.8Vvveb before version 1.0.8.2 contains a hard-coded credentials vulnerability in its docker-compose-apache.yaml configuration that allows unaCVE-2026-419315.3Vvveb before version 1.0.8.2 contains an information disclosure vulnerability that allows unauthenticated attackers to obtain sensitive servCVE-2026-419326.1Vvveb before 1.0.8.3 contains a stored cross-site scripting vulnerability in the customer signup flow where the Signup::addUser() controllerCVE-2026-419335.3Vvveb before 1.0.8.3 contains a directory listing information disclosure vulnerability that allows unauthenticated attackers to enumerate fiCVE-2026-419348.8Vvveb before version 1.0.8.2 contains an authenticated remote code execution vulnerability in the admin code editor that allows low-privilegCVE-2026-419357.1Vvveb before 1.0.8.3 contains an uncontrolled recursion vulnerability in the admin controller dispatch cycle where Base::init() repeatedly iCVE-2026-419368.1Vvveb before version 1.0.8.2 contains an XML external entity (XXE) injection vulnerability in the admin Tools/Import feature that allows autCVE-2026-419377.2Vvveb before 1.0.8.3 contains an unrestricted file upload vulnerability in the plugin upload endpoint that allows super_admin users to execuCVE-2026-419388.8Vvveb before version 1.0.8.2 contains an unrestricted file upload vulnerability in the media upload handler that allows authenticated users
CVE-2026-41927: High severity, CVSS 8.3 | Vulnix