What is CVE-2017-9542?

CVE-2017-9542 is a critical-severity vulnerability in D-Link Dir-615 Firmware, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-06-11.

How severe is CVE-2017-9542?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in D-Link Dir-615 Firmware

CVE-2017-9542

D-Link DIR-615 Wireless N 300 Router allows authentication bypass via a modified POST request to login.cgi. This issue occurs because it fails to validate the password field. Successful exploitation of this issue allows an attacker to take control of the affected device.

Vulnerability class: Broken Authentication

Published 2017-06-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.051 (92.3th percentile), scored 2026-10-24.

Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.051 · newest: 0.051 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

twitter.com/tiger_tigerboy/status/873458088321220609 (Third Party Advisory)
www.facebook.com/tigerBOY777/videos/1368513696568992/ (Permissions Required)
www.securityfocus.com/bid/98992 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-9542?: CVE-2017-9542 is a critical-severity vulnerability in D-Link Dir-615 Firmware, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-06-11.
How severe is CVE-2017-9542?: Critical severity. CVSS v3 base score is 9.8 out of 10.