Netis AC1200 Router NC21 V4.0.1.4296 is vulnerable to unauthenticated command injection via the /cgi-bin/skk_set.cgi endpoint. The password and new_pwd_confirm POST parameters are passed directly to the underlying OS shell without sanitization. An attacker can inject arbitrary shell commands by wrapping them in backticks (`) and encoding them in base64. Because the endpoint requires no authentication, any device on the LAN can achieve full Remote Code Execution on the router's operating system with a single HTTP POST request.

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History

Wed, 27 May 2026 19:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated Remote Command Injection via /cgi-bin/skk_set.cgi on Netis AC1200 Router
Weaknesses CWE-78

Wed, 27 May 2026 14:15:00 +0000

Type Values Removed Values Added
Description Netis AC1200 Router NC21 V4.0.1.4296 is vulnerable to unauthenticated command injection via the /cgi-bin/skk_set.cgi endpoint. The password and new_pwd_confirm POST parameters are passed directly to the underlying OS shell without sanitization. An attacker can inject arbitrary shell commands by wrapping them in backticks (`) and encoding them in base64. Because the endpoint requires no authentication, any device on the LAN can achieve full Remote Code Execution on the router's operating system with a single HTTP POST request.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-27T13:17:20.373Z

Reserved: 2026-04-06T00:00:00.000Z

Link: CVE-2026-36540

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-05-27T14:16:45.637

Modified: 2026-05-27T20:04:31.980

Link: CVE-2026-36540

cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-05-27T19:15:26Z

Weaknesses