Loading HuntDB...
Hunt
Vulnerability Intelligence by wss.sh
Home Daily Briefings High Impact CVEs Recent Exploits KEV Catalog GitHub Advisories Latest Updates Security News
Sign In Sign Up

CVE-2025-59691

Published Unknown
Actions:

Expert Analysis

Professional remediation guidance

Get tailored security recommendations from our analyst team for CVE-2025-59691. We'll provide specific mitigation strategies based on your environment and risk profile.

CVSS Score

V3.1
0.0
/10
Not Available
Base Score Metrics
Exploitability: N/A Impact: N/A

Attack Vector Metrics

Attack Vector
Not Available
Attack Complexity
Not Available
Privileges Required
Not Available
User Interaction
Not Available
Scope
Not Available

Impact Metrics

Confidentiality
Not Available
Integrity
Not Available
Availability
Not Available

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

EU Vulnerability Database

Monitored by ENISA for EU cybersecurity

EU Coordination

Not EU Coordinated

Exploitation Status

No Known Exploitation

EUVD ID

View on ENISA

ENISA Analysis

Malicious code in bioql (PyPI)

Affected Products (ENISA)

purevpn
purevpn

ENISA Scoring

CVSS Score (3.1)

3.7
/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Score

0.040
probability

ENISA References

https://nvd.nist.gov/vuln/detail/CVE-2025-59691
https://anagogistis.com/posts/purevpn-ipv6-leak
https://anagogistis.com/posts/purevpn-ipv6-leak/

Data provided by ENISA EU Vulnerability Database. Last updated: October 3, 2025

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed LOW

GHSA-w9w7-whq2-rr8h

Advisory Details

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 Scoring

CVSS Score

2.5

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2025-59691
WEB https://anagogistis.com/posts/purevpn-ipv6-leak

Advisory provided by GitHub Security Advisory Database. Published: September 19, 2025, Modified: September 19, 2025

Social Media Intelligence

Real-time discussions and threat intelligence from social platforms

1 post
Reddit • 1 month, 2 weeks ago
technadu

PureVPN’s Linux clients are leaking IPv6 traffic + tampering with firewalls A Greek researcher uncovered 2 major flaws in PureVPN’s Linux GUI & CLI clients: * **IPv6 leaks**: During network changes (Wi-Fi reconnect, resume from sleep), IPv6 traffic silently bypasses the VPN tunnel (CVE-2025-59691). * **Firewall tampering**: INPUT chain set …

Also mentions: CVE-2025-59692
1
1
3.0
View Original
Published: Unknown
Last Modified: Unknown
Copied to clipboard!