CVE-2026-41926: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (CWE-78) in Shenzhen Yipu Commercial and Trading Co., Ltd WDR201A WiFi Extender
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the firewall.cgi binary across five request handlers that apply insufficient input validation. Attackers can inject arbitrary shell commands through vulnerable parameters like websURLFilter, websHostFilter, portForward, singlePortForward, and ipportFilter using subshell syntax or unfiltered parameters, with payloads persisting in NVRAM and re-executing on every subsequent firewall.cgi request.
CVE-2026-41926: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (CWE-78) in Shenzhen Yipu Commercial and Trading Co., Ltd WDR201A WiFi Extender
Description
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the firewall.cgi binary across five request handlers that apply insufficient input validation. Attackers can inject arbitrary shell commands through vulnerable parameters like websURLFilter, websHostFilter, portForward, singlePortForward, and ipportFilter using subshell syntax or unfiltered parameters, with payloads persisting in NVRAM and re-executing on every subsequent firewall.cgi request.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-04-22T18:50:43.620Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f8f1b7cbff5d861042a3a2
Added to database: 5/4/2026, 7:21:27 PM
Last updated: 5/4/2026, 7:21:33 PM
Views: 1
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