CVE-2018-18656 json
The PureVPN client before 6.1.0 for Windows stores Login Credentials (username and password) in cleartext.
published 2018-10-26 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-10372
- cvss
- 7.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
The PureVPN client before 6.1.0 for Windows stores Login Credentials (username and password) in cleartext. The location of such files is %PROGRAMDATA%\purevpn\config\login.conf. Additionally, all local users can read this file.
Patch / fix
- purevpn purevpn 6.1.0
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- trustwave.com https://www.trustwave.com/Resources/SpiderLabs-Blog/Credential-Leak-Flaws-in-Windows-PureVPN-Client/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-522 Insufficiently Protected Credentials
References
-
trustwave.com
/Resources/SpiderLabs-Blog/Credential-Leak-Flaws-in-Windows-PureVPN-Client/
exploit, third-party-advisory
Sources
- CVE List CVE-2018-18656
- NVD CVE-2018-18656
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.