Cross-site request forgery (CSRF) vulnerability in apply.cgi in the Linksys WRT54GL Wireless-G Broadband Router with firmware 4.30.9 allows remote attackers to perform actions as administrators.

Cross-site scripting (XSS) vulnerability in the Linksys SPA941 VoIP Phone with firmware 5.1.8 allows remote attackers to inject arbitrary web script or HTML via the From header in a SIP message.

Multiple cross-site scripting (XSS) vulnerabilities in setup.cgi on the Cisco Linksys WAG54GS Wireless-G ADSL Gateway with 1.00.06 firmware allow remote attackers to inject arbitrary web script or HTML via the (1) c4_trap_ip_, (2) devname, (3) snmp_getcomm, or (4) snmp_setcomm parameter.

The Linksys SPA941 VoIP Phone allows remote attackers to cause a denial of service (device reboot) via a 0377 (0xff) character in the From header, and possibly certain other locations, in a SIP INVITE request.

The Linksys WAG200G with firmware 1.01.01, WRT54GC 2 with firmware 1.00.7, and WRT54GC 1 with firmware 1.03.0 and earlier allow remote attackers to obtain sensitive information (passwords and configuration data) via a packet to UDP port 916. NOTE: some of these details are obtained from third party information.

The HTTP server in Linksys SPA-921 VoIP Desktop Phone allows remote attackers to cause a denial of service (reboot) via (1) a long URL, or a long (2) username or (3) password during Basic Authentication.

PhoneCtrl.exe in Linksys WIP 330 Wireless-G IP Phone 1.00.06A allows remote attackers to cause a denial of service (crash) via a TCP SYN scan, as demonstrated using TCP ports 1-65535 with nmap.

Stack-based buffer overflow in the Broadcom BCMWL5.SYS wireless device driver 3.50.21.10, as used in Cisco Linksys WPC300N Wireless-N Notebook Adapter before 4.100.15.5 and other products, allows remote attackers to execute arbitrary code via an 802.11 response frame containing a long SSID field.

Linksys WRT54g firmware 1.00.9 does not require credentials when making configuration changes, which allows remote attackers to modify arbitrary configurations via a direct request to Security.tri, as demonstrated using the SecurityMode and layout parameters, a different issue than CVE-2006-2559.

Linksys WRT54G Wireless-G Broadband Router allows remote attackers to bypass access restrictions and conduct unauthorized operations via a UPnP request with a modified InternalClient parameter, which is not validated, as demonstrated by using AddPortMapping to forward arbitrary traffic.