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CVE-2018-18656

24
FAUCET Score

CVE-2018-18656 describes a critical vulnerability in PureVPN client for Windows versions prior to 6.1.0, where user login credentials (username and password) are stored in cleartext within the %PROGRAMDATA%\purevpn\config\login.conf file, accessible by all local users. This vulnerability carries a high CVSS score of 7.8, indicating a significant risk due to its low attack complexity and high potential for confidentiality, integrity, and availability impacts if exploited by a local attacker. While no active exploitation, public exploit code, or significant community discussion has been observed, the cleartext storage of credentials presents a substantial security risk to affected users.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.1.0CPE matchmatch criteria
cpe:2.3:a:purevpn:purevpn:*:*:*:*:*:windows:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
28.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 67th percentile among its peer group of 16,974 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

trustwave.com / Resources/SpiderLabs-Blog/Credential-Leak-Flaws-in-Windows-PureVPN-Client
ExploitThird Party Advisory