D-Link DIR-605L Hardware Revision B2 (End-of-Life, EOL) contains a hardcoded telnet backdoor. The device starts a telnet daemon at boot via /bin/telnetd.sh with the username "Alphanetworks" and the static password "wrgn76_dlwbr_dir605L" read from /etc/alpha_config/image_sign. The custom telnetd binary accepts a -u user:password flag, and the custom login binary uses strcmp() to validate credentials. Successful authentication grants an unauthenticated attacker on the local network a root shell with full administrative control. The device has reached End-of-Life (EOL) and will not receive patches.

D-Link DIR-600L Hardware Revision B1 (End-of-Life) contains a hardcoded telnet backdoor. The device starts a telnet daemon at boot via /bin/telnetd.sh with the username "Alphanetworks" and the static password "wrgn61_dlwbr_dir600L" read from /etc/alpha_config/image_sign. The custom telnetd binary accepts a -u user:password flag, and the custom login binary uses strcmp() to validate credentials. Successful authentication grants an unauthenticated attacker on the local network a root shell with full administrative control.  The device has reached End-of-Life (EOL) and will not receive patches.

D-Link DIR-600L Hardware Revision A1 (End-of-Life) contains a hardcoded telnet backdoor. The device starts a telnet daemon at boot via /bin/telnetd.sh with the username "Alphanetworks" and the static password "wrgn35_dlwbr_dir600l" read from /etc/alpha_config/image_sign. The custom telnetd binary accepts a -u user:password flag, and the custom login binary uses strcmp() to validate credentials. Successful authentication grants an unauthenticated attacker on the local network a root shell with full administrative control. The device has reached End-of-Life (EOL) and will not receive patches.

Use of a static key to protect a JWT token used in user authentication can allow an for an authentication bypass in D-Link D-View 8 v2.0.1.28

Certain models of D-Link wireless routers do not properly validate user input in the telnet service, allowing unauthenticated remote attackers to use hard-coded credentials to log into telnet and inject arbitrary OS commands, which can then be executed on the device.

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as very critical, has been found in D-Link DNS-320L, DNS-325, DNS-327L and DNS-340L up to 20240403. This issue affects some unknown processing of the file /cgi-bin/nas_sharing.cgi of the component HTTP GET Request Handler. The manipulation of the argument user with the input messagebus leads to hard-coded credentials. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-259283. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. NOTE: Vendor was contacted early and confirmed immediately that the product is end-of-life. It should be retired and replaced.

A vulnerability was found in D-Link DIR-823G 1.0.2B05_20181207. It has been rated as critical. This issue affects the function SetAutoRebootSettings/SetClientInfo/SetDMZSettings/SetFirewallSettings/SetParentsControlInfo/SetQoSSettings/SetVirtualServerSettings of the file /HNAP1/ of the component Web Management Interface. The manipulation leads to improper access controls. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

A vulnerability was found in D-Link DI-8003 16.07.16A1. It has been declared as critical. Affected by this vulnerability is the function upgrade_filter_asp of the file /upgrade_filter.asp. The manipulation of the argument path leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

A vulnerability was found in D-Link DNS-320, DNS-320LW, DNS-325 and DNS-340L up to 20241028. It has been declared as critical. Affected by this vulnerability is the function cgi_user_add of the file /cgi-bin/account_mgr.cgi?cmd=cgi_user_add. The manipulation of the argument name leads to os command injection. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.

A vulnerability was found in D-Link DI-8003 16.07.16A1. It has been rated as critical. Affected by this issue is the function dbsrv_asp of the file /dbsrv.asp. The manipulation of the argument str leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

A vulnerability was found in D-Link DI-8003 16.07.16A1. It has been classified as critical. Affected is the function upgrade_filter_asp of the file /upgrade_filter.asp. The manipulation of the argument path leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

The D-Link DSL6740C modem has an Incorrect Use of Privileged APIs vulnerability, allowing unauthenticated remote attackers to modify any user’s password by leveraging the API, thereby granting access to Web, SSH, and Telnet services using that user’s account.

A vulnerability has been found in D-Link DIR-816 A2 1.10CNB04 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /goform/setDeviceSettings of the component Web Interface. The manipulation of the argument statuscheckpppoeuser leads to os command injection. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-252139.

A vulnerability was found in D-Link DNS-320, DNS-320LW, DNS-325 and DNS-340L up to 20241028. It has been rated as critical. Affected by this issue is the function cgi_user_add of the file /cgi-bin/account_mgr.cgi?cmd=cgi_user_add. The manipulation of the argument group leads to os command injection. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used.

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in D-Link DIR-859 1.06B01. It has been rated as critical. Affected by this issue is some unknown functionality of the file /hedwig.cgi of the component HTTP POST Request Handler. The manipulation of the argument service with the input ../../../../htdocs/webinc/getcfg/DHCPS6.BRIDGE-1.xml leads to path traversal. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-251666 is the identifier assigned to this vulnerability. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. NOTE: Vendor was contacted early and confirmed immediately that the product is end-of-life. It should be retired and replaced.

A vulnerability has been found in D-Link DAR-7000 up to 20231126 and classified as critical. This vulnerability affects unknown code of the file /user/inc/workidajax.php. The manipulation of the argument id leads to sql injection. The exploit has been disclosed to the public and may be used. VDB-247162 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

A weakness has been identified in D-Link DI-8100 16.07.26A1. Affected is the function sprintf of the file /auto_reboot.asp of the component HTTP Handler. This manipulation of the argument enable/time causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.

A security vulnerability has been detected in D-Link DI-8100 16.07.26A1. Affected by this vulnerability is the function url_rule_asp of the file /url_rule.asp of the component POST Parameter Handler. Such manipulation leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.

A security issue exists in D-Link D-View 8 v2.0.2.89 and prior that could allow an attacker to manipulate the probe inventory of the D-View service. This could result in the disclosure of information from other probes, denial of service conditions due to the probe inventory becoming full, or the execution of tasks on other probes.

A vulnerability was found in D-Link DAP-1620 1.03 and classified as critical. This issue affects the function check_dws_cookie of the file /storage. The manipulation of the argument uid leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

A vulnerability, which was classified as critical, was found in D-Link DAP-1620 1.03. This affects the function check_dws_cookie of the file /storage of the component Cookie Handler. The manipulation leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of D-Link DCS-960L v1.07.102. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HNAP service, which listens on TCP port 80 by default. When parsing the SOAPAction request header, the process does not properly validate the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the admin user. Was ZDI-CAN-8458.

A vulnerability classified as critical has been found in D-Link DIR-823G 1.0.2B05_20181207. Affected is the function SetDDNSSettings of the file /HNAP1/ of the component DDNS Service. The manipulation of the argument SOAPAction leads to improper authorization. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

A vulnerability classified as critical was found in D-Link DIR-823G 1.0.2B05_20181207. Affected by this vulnerability is the function SetUpnpSettings of the file /HNAP1/ of the component UPnP Service. The manipulation of the argument SOAPAction leads to improper authorization. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Missing Authentication for Critical Function vulnerability in debug_post_set.cgi of D-Link DWR-932C E1 firmware allows an unauthenticated attacker to execute administrative actions.

OS Command Injection vulnerability in debug_fcgi of D-Link DWR-932C E1 firmware allows a remote attacker to perform command injection via a crafted HTTP request.

An OS command injection vulnerability exists in various legacy D-Link routers—including DIR-300 rev B and DIR-600 (firmware ≤ 2.13 and ≤ 2.14b01, respectively)—due to improper input handling in the unauthenticated command.php endpoint. By sending specially crafted POST requests, a remote attacker can execute arbitrary shell commands with root privileges, allowing full takeover of the device. This includes launching services such as Telnet, exfiltrating credentials, modifying system configuration, and disrupting availability. The flaw stems from the lack of authentication and inadequate sanitation of the cmd parameter.

The web interface of multiple D-Link routers, including DIR-600 rev B (≤2.14b01) and DIR-300 rev B (≤2.13), contains an unauthenticated OS command injection vulnerability in command.php, which improperly handles the cmd POST parameter. A remote attacker can exploit this flaw without authentication to spawn a Telnet service on a specified port, enabling persistent interactive shell access as root.

A vulnerability, which was classified as critical, has been found in D-Link DAP-1562 1.10. Affected by this issue is the function http_request_parse of the component HTTP Header Handler. The manipulation of the argument Authorization leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

A weakness has been identified in D-Link DIR-806A 100CNb11. Affected is the function ssdpcgi_main of the component SSDP Request Handler. This manipulation causes command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be exploited. This vulnerability only affects products that are no longer supported by the maintainer.

A vulnerability was found in D-Link DI-7400G+ 19.12.25A1. This affects an unknown function of the file /msp_info.htm?flag=cmd. The manipulation of the argument cmd results in command injection. The attack can be launched remotely. The exploit has been made public and could be used.

A vulnerability was found in D-Link DIR-600 up to 2.15WWb02. Affected by this vulnerability is an unknown functionality of the file hedwig.cgi of the component HTTP Header Handler. The manipulation of the argument Cookie results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.

A vulnerability was detected in D-Link DIR-860LB1 and DIR-868LB1 203b01/203b03. Affected is an unknown function of the component DHCP Daemon. The manipulation of the argument Hostname results in command injection. It is possible to launch the attack remotely. The exploit is now public and may be used.

A vulnerability has been found in D-Link DIR-816L 2_06_b09_beta. This affects the function genacgi_main of the file gena.cgi. The manipulation of the argument SERVER_ID/HTTP_SID leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

A weakness has been identified in D-Link DWR-M920, DWR-M921, DWR-M960, DIR-822K and DIR-825M 1.01.07. This issue affects some unknown processing of the file /boafrm/formTracerouteDiagnosticRun. Executing manipulation of the argument host can lead to buffer overflow. The attack may be launched remotely. The exploit has been made available to the public and could be exploited.

A vulnerability was identified in D-Link DIR-852 1.00. This issue affects some unknown processing of the file /gena.cgi. Such manipulation of the argument service leads to command injection. The attack can be executed remotely. The exploit is publicly available and might be used. This vulnerability only affects products that are no longer supported by the maintainer.

A vulnerability was determined in D-Link DIR-816L 2_06_b09_beta. This issue affects the function soapcgi_main of the file /soap.cgi. This manipulation causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. This vulnerability only affects products that are no longer supported by the maintainer.

A vulnerability was detected in D-Link DIR-816L 2_06_b09_beta. Affected by this vulnerability is the function authenticationcgi_main of the file /authentication.cgi. Performing manipulation of the argument Password results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit is now public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

A vulnerability has been found in D-Link DI-7001 MINI 19.09.19A1/24.04.18B1. The affected element is an unknown function of the file /msp_info.htm. Such manipulation of the argument cmd leads to command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

A security vulnerability has been detected in D-Link DAP-2695 2.00RC13. The impacted element is the function sub_4174B0 of the component Firmware Update Handler. The manipulation leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

A security vulnerability has been detected in D-Link DI-7001 MINI 24.04.18B1. The affected element is an unknown function of the file /dbsrv.asp. Such manipulation of the argument str leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed publicly and may be used.

A vulnerability was detected in D-Link DAP-2695 2.00RC131. This affects the function fwupdater_main of the file rgbin of the component Firmware Update Handler. Performing manipulation results in os command injection. The attack may be initiated remotely. This vulnerability only affects products that are no longer supported by the maintainer.

A flaw has been found in D-Link DI-7100G C1 up to 20250928. This vulnerability affects the function sub_4C0990 of the file /webchat/login.cgi of the component jhttpd. Executing manipulation of the argument openid can lead to buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.

A vulnerability has been found in D-Link DHP-W310AV 1.04 and classified as critical. This vulnerability affects unknown code. The manipulation leads to authentication bypass by spoofing. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

A vulnerability was found in D-Link DCS-935L up to 1.13.01. The impacted element is the function sub_402280 of the file /HNAP1/. The manipulation of the argument HNAP_AUTH/SOAPAction results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.

A vulnerability was found in D-Link DIR-825 1.08.01. This impacts the function get_ping6_app_stat of the file ping6_response.cg of the component httpd. Performing manipulation of the argument ping6_ipaddr results in buffer overflow. It is possible to initiate the attack remotely. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.

A vulnerability was identified in D-Link DIR-645 105B01. This issue affects the function soapcgi_main of the file /soap.cgi. Such manipulation of the argument service leads to command injection. The attack can be launched remotely. The exploit is publicly available and might be used. This vulnerability only affects products that are no longer supported by the maintainer.

A security flaw has been discovered in D-Link DIR-825 up to 2.10. Affected by this vulnerability is the function sub_4106d4 of the file apply.cgi. The manipulation of the argument countdown_time results in buffer overflow. The attack can be executed remotely. The exploit has been released to the public and may be exploited. This vulnerability only affects products that are no longer supported by the maintainer.

A vulnerability was determined in D-Link DIR-823X up to 250416. Affected by this vulnerability is the function sub_415028 of the file /goform/set_static_leases. Executing manipulation of the argument Hostname can lead to command injection. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized.

A vulnerability classified as critical has been found in D-Link DAR-7000 up to 20240912. Affected is an unknown function of the file /view/DBManage/Backup_Server_commit.php. The manipulation of the argument host leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.