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.
Metrics
Affected Vendors & Products
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History
Wed, 06 May 2026 14:15:00 +0000
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ssvc
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Wed, 06 May 2026 09:45:00 +0000
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Shenzhen Yuner Yipu
Shenzhen Yuner Yipu wifi Extender Wdr201a |
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Shenzhen Yuner Yipu
Shenzhen Yuner Yipu wifi Extender Wdr201a |
Mon, 04 May 2026 20:00:00 +0000
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Mon, 04 May 2026 19:30:00 +0000
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| 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. | |
| Title | WDR201A WiFi Extender OS Command Injection via firewall.cgi | |
| Weaknesses | CWE-78 | |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-05-04T19:17:52.100Z
Updated: 2026-05-06T13:57:35.136Z
Reserved: 2026-04-22T18:50:43.620Z
Link: CVE-2026-41926
Updated: 2026-05-06T13:57:31.786Z
Status : Deferred
Published: 2026-05-04T20:16:19.450
Modified: 2026-05-05T19:47:31.297
Link: CVE-2026-41926
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