An authentication bypass vulnerability on D-Link DIR-850L Wireless AC1200 Dual Band Gigabit Cloud Router (Hardware Version : A1, B1; Firmware Version : 1.02-2.06) devices potentially allows attackers to bypass SharePort Web Access Portal by directly visiting /categoryview.php or /folderview.php.

D-Link routers with the mydlink feature have some web interfaces without authentication requirements. An attacker can remotely obtain users' DNS query logs and login logs. Vulnerable targets include but are not limited to the latest firmware versions of DIR-817LW (A1-1.04), DIR-816L (B1-2.06), DIR-816 (B1-2.06?), DIR-850L (A1-1.09), and DIR-868L (A1-1.10).

D-Link DIR-822 C1 before v3.11B01Beta, DIR-822-US C1 before v3.11B01Beta, DIR-850L A before v1.21B08Beta, DIR-850L B before v2.22B03Beta, and DIR-880L A before v1.20B02Beta devices allow authentication bypass.

D-Link DIR-822 C1 before v3.11B01Beta, DIR-822-US C1 before v3.11B01Beta, DIR-850L A before v1.21B08Beta, DIR-850L B before v2.22B03Beta, and DIR-880L A before v1.20B02Beta devices allow authenticated remote command execution.

The D-Link NPAPI extension, as used on D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) and REV. B (with firmware through FW208WWb02) devices, participates in mydlink Cloud Services by establishing a TCP relay service for HTTP, even though a TCP relay service for HTTPS is also established.

D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) devices have XSS in the action parameter to htdocs/web/sitesurvey.php.

D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) devices have XSS in the action parameter to htdocs/web/wpsacts.php.

D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) and REV. B (with firmware through FW208WWb02) devices use the same hardcoded /etc/stunnel.key private key across different customers' installations, which allows remote attackers to defeat the HTTPS cryptographic protection mechanisms by leveraging knowledge of this key from another installation.

htdocs/parentalcontrols/bind.php on D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) devices does not prevent unauthenticated nonce-guessing attacks, which makes it easier for remote attackers to change the DNS configuration via a series of requests.

D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) and REV. B (with firmware through FW208WWb02) devices have 0666 /var/run/hostapd permissions.

D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) and REV. B (with firmware through FW208WWb02) devices allow remote attackers to cause a denial of service (daemon crash) via crafted LAN traffic.

D-Link DIR-850L REV. B (with firmware through FW208WWb02) devices have a hardcoded password of wrgac25dlink.2013guidir850l for the Alphanetworks account upon device reset, which allows remote attackers to obtain root access via a TELNET session.

D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) devices have XSS in the action parameter to htdocs/web/shareport.php.

D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) devices have XSS in the action parameter to htdocs/web/wandetect.php.

D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) and REV. B (with firmware through FW208WWb02) devices have 0666 /var/etc/hnapasswd permissions.

registersend.php on D-Link DIR-850L REV. B (with firmware through FW208WWb02) devices does not require authentication, which can result in unintended enrollment in mydlink Cloud Services.

The D-Link NPAPI extension, as used on D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) and REV. B (with firmware through FW208WWb02) devices, does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

The D-Link NPAPI extension, as used in conjunction with D-Link DIR-850L REV. B (with firmware through FW208WWb02) devices, sends the cleartext admin password over the Internet as part of interaction with mydlink Cloud Services.

D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) and REV. B (with firmware through FW208WWb02) devices have 0666 /var/passwd permissions.

D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) and REV. B (with firmware through FW208WWb02) devices have 0644 /var/etc/shadow (aka the /etc/shadow symlink target) permissions.

D-Link DIR-850L REV. A (with firmware through FW114WWb07h2abbeta1) and REV. B (with firmware through FW208WWb02) devices have 0666 /var/run/storageaccountroot permissions.

Multiple D-Link devices including the DIR-850L firmware versions 1.14B07 and 2.07.B05 contain a stack-based buffer overflow vulnerability in the web administration interface HNAP service.

DLink DIR850 ET850-1.08TRb03 is affected by an incorrect access control vulnerability through an unauthenticated remote configuration download.

DLink DIR850 ET850-1.08TRb03 is affected by an incorrect access control vulnerability through URL redirection to untrusted site.

An issue in D-Link DIR-850L v.B1FW223WWb01 allows a remote attacker to execute arbitrary code via a crafted script to the en parameter.