What is CVE-2018-18009?

CVE-2018-18009 is a critical-severity vulnerability in Dlink Dir-140l, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2018-12-21.

How severe is CVE-2018-18009?

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

Vulnerability in Dlink Dir-140l

CVE-2018-18009

dirary0.js on D-Link DIR-140L, DIR-640L devices allows remote unauthenticated attackers to discover admin credentials.

Published 2018-12-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.027 (85.9th percentile), scored 2026-10-28.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000

Affected products

Dlink Dir-140l
Dlink Dir-140l Firmware — versions 1.02
Dlink Dir-640l
Dlink Dir-640l Firmware — versions 1.01ru

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

www.securityfocus.com/bid/106336 (VDB Entry, Third Party Advisory, vdb-entry)
seclists.org/fulldisclosure/2018/Dec/46 (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2018-18009?: CVE-2018-18009 is a critical-severity vulnerability in Dlink Dir-140l, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2018-12-21.
How severe is CVE-2018-18009?: Critical severity. CVSS v3 base score is 9.8 out of 10.