What is CVE-2018-12575?

CVE-2018-12575 is a critical-severity vulnerability in TP-Link Tl-Wr841n, classified under Improper Authentication. CVSS score: 9.8/10. Published 2018-07-02.

How severe is CVE-2018-12575?

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

Auth bypass in TP-Link Tl-Wr841n

CVE-2018-12575

On TP-Link TL-WR841N v13 00000001 0.9.1 4.16 v0001.0 Build 171019 Rel.55346n devices, all actions in the web interface are affected by bypass of authentication via an HTTP request.

Vulnerability class: Broken Authentication

Published 2018-07-02 · 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: 0.029 (86.5th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000

Affected products

TP-Link Tl-Wr841n — versions 13.0
TP-Link Tl-Wr841n Firmware — versions 0.9.1_4.16

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

software-talk.org/blog/2018/06/tplink-wr841n-broken-auth-cve-2018-12575/ (Third Party Advisory, Broken Link)

Frequently asked questions

What is CVE-2018-12575?: CVE-2018-12575 is a critical-severity vulnerability in TP-Link Tl-Wr841n, classified under Improper Authentication. CVSS score: 9.8/10. Published 2018-07-02.
How severe is CVE-2018-12575?: Critical severity. CVSS v3 base score is 9.8 out of 10.