CVE-2018-3949

Name: CVE-2018-3949
Creator: NVD / NIST
Published: 2018-12-01T03:29:00.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 53.30%

Last modified Jun 17, 2026

CVE-2018-3949 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An exploitable information disclosure vulnerability exists in the HTTP server functionality of the TP-Link TL-R600VPN. A specially crafted URL can cause a directory traversal, resulting in the disclosure of sensitive system files. EPSS estimates a 53.30% chance of exploitation in the next 30 days.

Description

An exploitable information disclosure vulnerability exists in the HTTP server functionality of the TP-Link TL-R600VPN. A specially crafted URL can cause a directory traversal, resulting in the disclosure of sensitive system files. An attacker can send either an unauthenticated or an authenticated web request to trigger this vulnerability.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

53.30%

98.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Tp-Link	Tl-R600vpn Firmware	1.3.0
Tp-Link	Tl-R600vpn Firmware	1.2.3

References

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0618Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0618Exploit, Third Party Advisory

Timeline

Published: Dec 1, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-3949?

How severe is CVE-2018-3949?

CVE-2018-3949 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 53.30% probability of exploitation in the next 30 days.

How do I fix CVE-2018-3949?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-3949?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST