HIGH

CVE-2018-3948

CVSS v3

7.5

HIGH

EPSS Score

23.1 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2018-3948 yet.

Full record on NVD

Description

An exploitable denial-of-service vulnerability exists in the URI-parsing functionality of the TP-Link TL-R600VPN HTTP server. A specially crafted URL can cause the server to stop responding to requests, resulting in downtime for the management portal. An attacker can send either an unauthenticated or authenticated web request to trigger this vulnerability.

Technical details

Published: 2018-11-30

Frequently asked questions

What is CVE-2018-3948?

Is CVE-2018-3948 actively exploited?

Active exploitation of CVE-2018-3948 has not been confirmed. Its EPSS score was 23.1% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-3948?

CVE-2018-3948 has a CVSS v3 base score of 7.5 (HIGH severity).

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