What is CVE-2018-15701?

CVE-2018-15701 is a medium-severity vulnerability in TP-Link Tl-Wrn841n, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2018-10-01.

How severe is CVE-2018-15701?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in TP-Link Tl-Wrn841n

CVE-2018-15701

The web interface in TP-Link TL-WRN841N 0.9.1 4.16 v0348.0 is vulnerable to a denial of service when an unauthenticated LAN user sends a crafted HTTP header containing an unexpected Cookie field.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2018-10-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (46.4th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

TP-Link Tl-Wrn841n
TP-Link Tl-Wrn841n Firmware — versions 0.9.1_4.16_v0348.0
TP-Link Tl-Wrn841n — versions Firmware versions 0.9.1 4.16 v0348.0 and below

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.tenable.com/security/research/tra-2018-27 (Vendor Advisory)

Frequently asked questions

What is CVE-2018-15701?: CVE-2018-15701 is a medium-severity vulnerability in TP-Link Tl-Wrn841n, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2018-10-01.
How severe is CVE-2018-15701?: Medium severity. CVSS v3 base score is 6.5 out of 10.