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.

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. A (with firmware through FW114WWb07h2abbeta1) and REV. B (with firmware through FW208WWb02) devices have 0666 /var/etc/hnapasswd permissions.

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.