CVE-2017-14420

Name: CVE-2017-14420
Creator: NVD / NIST
Published: 2017-09-13T17:29:00.493+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 0.51%

Last modified Jun 17, 2026

CVE-2017-14420 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. The D-Link NPAPI extension, as used on D-Link DIR-850L REV. A (with firmware through FW114WWb07_h2ab_beta1) and REV. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.51%

39.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Dlink	Dir-850l Firmware	<= fw114wwb07_h2ab_beta1
Dlink	Dir-850l Firmware	<= fw208wwb02

References

https://pierrekim.github.io/blog/2017-09-08-dlink-850l-mydlink-cloud-0days-vulnerabilities.htmlExploit, Third Party Advisory
https://pierrekim.github.io/blog/2017-09-08-dlink-850l-mydlink-cloud-0days-vulnerabilities.htmlExploit, Third Party Advisory

Timeline

Published: Sep 13, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-14420?

How severe is CVE-2017-14420?

CVE-2017-14420 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2017-14420?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-14420?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST