Sending a blank GET request to a Linksys WRT54G v1.0 (firmware v 1.42.3) router results in a denial of service.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/32325/linksys_wrt54g_vuln.txt
Source: https://packetstormsecurity.com/files/32325/linksys_wrt54g_vuln.txt.html