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CVE-2018-3949

54
FAUCET Score

CVE-2018-3949 is an information disclosure vulnerability affecting the TP-Link TL-R600VPN router and its firmware. This flaw allows an attacker to perform directory traversal via a specially crafted URL, leading to the disclosure of sensitive system files. With a CVSS score of 7.5 (High), this vulnerability can be triggered by unauthenticated or authenticated web requests over the network with low attack complexity, resulting in high confidentiality impact. While there is no known active exploitation (KEV) or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
1.3.0CPE matchmatch criteria
cpe:2.3:o:tp-link:tl-r600vpn_firmware:1.3.0:*:*:*:*:*:*:*
1.2.3CPE matchmatch criteria
cpe:2.3:o:tp-link:tl-r600vpn_firmware:1.2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
53.30%
Probability of exploitation in next 30 days
EPSS Percentile
98.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.5330 is in the 98th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

talosintelligence.com / vulnerability_reports/TALOS-2018-0618
ExploitThird Party Advisory