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.
History

Fri, 19 Sep 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 19 Sep 2025 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux
Purevpn
Purevpn purevpn
Vendors & Products Linux
Linux linux
Purevpn
Purevpn purevpn

Thu, 18 Sep 2025 23:15:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-669
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2025-09-18T00:00:00.000Z

Updated: 2025-09-19T13:08:52.061Z

Reserved: 2025-09-18T00:00:00.000Z

Link: CVE-2025-59691

cve-icon Vulnrichment

Updated: 2025-09-19T13:08:47.118Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-18T23:15:34.310

Modified: 2025-09-19T16:00:27.847

Link: CVE-2025-59691

cve-icon Redhat

No data.