CVE-2017-14420: D-Link Dir-850l Firmware

Medium severity, CVSS 5.9. EPSS: 0.5% chance of exploitation in the next 30 days.

The D-Link NPAPI extension, as used on D-Link DIR-850L REV. A (with firmware through FW114WWb07_h2ab_beta1) 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.

Affected products

• D-Link Dir-850l Firmware: up to and including fw114wwb07_h2ab_beta1; up to and including fw208wwb02

Published 2017-09-13. Last modified 2026-06-17.