Which products and versions are affected by CVE-2018-3949?

Affected: Tl-R600vpn Firmware (Tp-Link) versions 1.2.3, 1.3.0; TP-Link versions >= TP-Link TL-R600VPN HWv3 FRNv1.3.0 TP-Link TL-R600VPN HWv2 FRNv1.2.3. The full list is in the CVE brief.

Is CVE-2018-3949 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed since Jan 12, 2022.

Is CVE-2018-3949 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2018-3949?

No public exploit code is known.

Is there a fix for CVE-2018-3949?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2018-3949 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2018-3949

HighExploited

An exploitable information disclosure vulnerability exists in the HTTP server functionality of the TP-Link TL-R600VPN.

Published Dec 1, 2018 · Updated Nov 21, 2024

Key Facts

Patch immediately

CVE-2018-3949 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Tl-R600vpn Firmware (Tp-Link), TP-Link.
It is exploited in the wild, listed in Industry KEV feed since Jan 12, 2022. No public exploit code is known.
EPSS estimates a 53% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

7.5

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

EPSS (30-day exploit likelihood)

53%

Higher than 98.9% of all scored CVEs

Exploited in the wild

Yes

1 catalog listing

Public exploit code

None known

Get the full CVE-2018-3949 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Jan 12, 2022	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
Tl-R600vpn FirmwareTp-Link	1.2.3, 1.3.0	n/a
TP-Link	>= TP-Link TL-R600VPN HWv3 FRNv1.3.0 TP-Link TL-R600VPN HWv2 FRNv1.2.3	n/a

Timeline

Publicly disclosed
Dec 1, 2018
Added to Industry KEV feed
Jan 12, 2022
Last updated
Nov 21, 2024

Weakness Type

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

References

4 more references in the full CVE brief

FAQ

Common Questions.

An exploitable information disclosure vulnerability exists in the HTTP server functionality of the TP-Link TL-R600VPN.
Affected: Tl-R600vpn Firmware (Tp-Link) versions 1.2.3, 1.3.0; TP-Link versions >= TP-Link TL-R600VPN HWv3 FRNv1.3.0 TP-Link TL-R600VPN HWv2 FRNv1.2.3. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jan 12, 2022.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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