CVE-2018-18489 — The ping feature in the Diagnostic functionality on TP-LINK WR840N v2 Firmware 3.16.9 Build 150701 Rel.51516n devices allows remote attackers to cause a denial of service (HTTP service termination) by modifying the packet size to be higher than the UI limit of 1472

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MEDIUM

The ping feature in the Diagnostic functionality on TP-LINK WR840N v2 Firmware 3.16.9 Build 150701 Rel.51516n devices allows remote attackers to cause a denial of service (HTTP service termination) by modifying the packet size to be higher than the UI limit of 1472

Published Apr 16, 2019

4.9

MEDIUM

CVSS 3.0

EPSS 1.74%

Description

The ping feature in the Diagnostic functionality on TP-LINK WR840N v2 Firmware 3.16.9 Build 150701 Rel.51516n devices allows remote attackers to cause a denial of service (HTTP service termination) by modifying the packet size to be higher than the UI limit of 1472.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.74% 0.01742

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01742

Score over time

2021–2026

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Percentile over time

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Table of values (13 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.74% (0.01742)	76.91th	v5 (v2026.06.15)
Jun 15, 2026	1.77% (0.01774)	75.23th	v5 (v2026.06.15)
Jul 20, 2024	0.15% (0.00148)	51.34th	v3 (v2023.03.01)
Jun 15, 2024	0.15% (0.00148)	51.05th	v3 (v2023.03.01)
Mar 7, 2023	0.15% (0.00148)	49.04th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)
Feb 3, 2022	0.65% (0.00651)	18.22th	v1
Jan 6, 2022	0.65% (0.00651)	17.65th	v1
Sep 1, 2021	0.65% (0.00651)	45.91th	v1
Apr 14, 2021	0.65% (0.00651)	0.00th	v1

Weaknesses (0)

No CWE recorded.

References (1)

https://youtu.be/VGNEYWR9MgY
x_refsource_MISCExploitThird Party Advisory

Link	Providers	Tags
https://youtu.be/VGNEYWR9MgY		x_refsource_MISCExploitThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Apr 16, 2019

Updated Aug 5, 2024

Reserved Oct 18, 2018

Link CVE-2018-18489

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2018-18489

Red Hat

Severity n/a

Public date n/a

Links CVE-2018-18489