CVE-2026-75501 exposes an unauthenticated UPnP service on Calix routers. Public PoC code shows how attackers bypass NAT and firewall protections. Related Posts: EverShop CVE-2026-72843 Flaw Allows Unauthenticated Account Takeover CVE-2026-77806: SPIP Unauthenticated RCE Exploited in the Wild as Public Exploit Lands Spring Data REST and Spring AI Vulnerabilities: Four High-Severity Flaws Patched The post CVE-2026-75501: Public PoC for Calix Router Flaw That Bypasses NAT and Firewall Protection