Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the sStRtMskShow parameter at ipstrt.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the CGIbyFieldName parameter at chglog.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the trapcomm parameter at cgiswm.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the sProfileName parameter at usergrp.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the sPPPSrvNm parameter at fwuser.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the sPeerId parameter at vpn.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the AControlIp1 parameter at acontrol.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the pub_key parameter at v2x00.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

DrayTek Vigor3910 devices through 4.3.2.6 allow unauthenticated DOM-based reflected XSS.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the fid parameter at v2x00.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the sProfileName parameter at wizfw.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the profname parameter at v2x00.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the sBPA_Pwd parameter at inet15.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the saveitem parameter at lan2lan.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

DrayTek Vigor310 devices through 4.3.2.6 allow a remote attacker to execute arbitrary code via the function ft_payload_dns(), because a byte sign-extension operation occurs for the length argument of a _memcpy call, leading to a heap-based Buffer Overflow.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the sProfileName parameter at v2x00.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the sCloudPass parameter at v2x00.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor 3910 v4.3.2.6 was discovered to contain a buffer overflow in the sSrvName parameter at service.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Draytek Vigor Routers firmware versions below 3.9.6/4.2.4, Access Points firmware versions below v1.4.0, Switches firmware versions below 2.6.7, and Myvigor firmware versions below 2.3.2 were discovered to use hardcoded encryption keys which allows attackers to bind any affected device to their own account. Attackers are then able to create WCF and DrayDDNS licenses and synchronize them from the website.

An issue was discovered on certain DrayTek Vigor routers before July 2022 such as the Vigor3910 before 4.3.1.1. /cgi-bin/wlogin.cgi has a buffer overflow via the username or password to the aa or ab field.