PureVPN Client Application CLI 2.0.1/GUI 2.10.0 on Linux IPv6 resource transfer

CVSS Meta Temp Score
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CTI Interest Score
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3.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in PureVPN Client Application CLI 2.0.1/GUI 2.10.0 on Linux. This affects an unknown part of the component IPv6 Handler. The manipulation leads to resource transfer. This vulnerability is listed as CVE-2025-59691. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in PureVPN Client Application CLI 2.0.1/GUI 2.10.0 on Linux. It has been rated as problematic. This issue affects some unknown processing of the component IPv6 Handler. The manipulation with an unknown input leads to a resource transfer vulnerability. Using CWE to declare the problem leads to CWE-669. The product does not properly transfer a resource/behavior to another sphere, or improperly imports a resource/behavior from another sphere, in a manner that provides unintended control over that resource. Impacted is confidentiality. The summary by CVE is:

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.

The advisory is shared at anagogistis.com. The identification of this vulnerability is CVE-2025-59691 since 09/18/2025. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 265913 (Linux Distros Unpatched Vulnerability : CVE-2025-59691), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (265913) and EUVD (EUVD-2025-30222). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.7
CNA Vector (MITRE): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource transfer
CWE: CWE-669
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 265913
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-59691

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/18/2025 CVE reserved
09/19/2025 +1 days Advisory disclosed
09/19/2025 +0 days VulDB entry created
09/26/2025 +7 days VulDB entry last update

Sourcesinfo

Advisory: anagogistis.com
Status: Not defined

CVE: CVE-2025-59691 (🔒)
GCVE (CVE): GCVE-0-2025-59691
GCVE (VulDB): GCVE-100-324953
EUVD: 🔒

Entryinfo

Created: 09/19/2025 07:25
Updated: 09/26/2025 06:07
Changes: 09/19/2025 07:25 (62), 09/19/2025 19:55 (1), 09/26/2025 06:07 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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