Fix better detection of vulnerable router for linksys/eseries_themoon_rce exploit (#734)

* Better detection of vulnerable router

* Update eseries_themoon_rce.py

---------

Co-authored-by: Eshwar Sai Jalagam <bobby@Bobby-PC>

routersploit/modules/exploits/routers/linksys/eseries_themoon_rce.py

@@ -99,7 +99,7 @@ class Exploit(HTTPClient):
             path="/tmUnblock.cgi",
         )
 
-        if response and response.status_code in [200, 301, 302]:
+        if response and response.status_code in [200, 301, 302] and not any(i in response.text.lower() for i in ["page not found", "error", "404", "not found"]):
             return True  # target is vulnerable
 
         return False  # target is not vulnerable