CVE-2026-36540
CVSS Score
7.3
EPSS Score
0.2%
EPSS Percentile
44th
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.
| Vendor | n/a |
| Product | n/a |
| Published | May 27, 2026 |
| Last Updated | May 28, 2026 |
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Affected Versions
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