CVE-2025-59691

LOW
3.7
CVSS Score
Published: September 18, 2025 at 12:00 AM UTC
Updated: October 19, 2026 at 04:10 PM UTC
1 product affected across 1 vendorPureVPN

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Severity
LOW3.7
Exploit prediction
EPSS 0.2%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.7LOWmitre
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-669

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