What’s Vulnerable › Vulnerabilities

CVE-2026-111712: Netcore NR256CN through 1.5.140116 Authentication Bypass via CGI Path Prefix

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-16 · updated 2026-10-16
• Weakness: CWE-288

Description

Netcore NR256CN through 1.5.140116 contains an authentication bypass vulnerability that allows unauthenticated attackers to reach protected management CGI handlers by prefixing the URI with a public route. Attackers can request paths prefixed with l7_web_auth.cgi or an .ico route to invoke protected management handlers without credentials.

Affected products

• Netcore NR256CN: through 1.5.140116

References

• https://github.com/lukadqq/netcore-router-public-refs/blob/a44d562736b41c944223297e9144d2ad7fa2aff1/2026.10.15-netcore-nr256cn-cgi-auth-bypass-alternate-path.md
• https://www.vulncheck.com/advisories/netcore-nr256cn-through-1.5.140116-authentication-bypass-via-cgi-path-prefix

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