CVE-2025-59691
LOW EPSS 10.4%
Published Sep 18, 20259mo ago · Modified Jun 17, 20261w ago
3.7 CVSS 3.1
Published Sep 18, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago
Description
PureVPN client applications on Linux through September 2025 allow IPv6 traffic to leak outside the VPN tunnel upon network events such as Wi-Fi reconnect or system resume. In the CLI client, the VPN auto-reconnects and claims to be connected, but IPv6 traffic is no longer routed or blocked. In the GUI client, the IPv6 connection remains functional after disconnection until the user clicks Reconnect. In both cases, the real IPv6 address is exposed to external services, violating user privacy and defeating the advertised IPv6 leak protection. This affects CLI 2.0.1 and GUI 2.10.0.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None
Threat Intelligence
EPSS Exploit Probability
10.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-669
References 1
- anagogistis.com https://anagogistis.com/posts/purevpn-ipv6-leak/
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.