CVE-2025-59692Public exploitNetwork attack vector

Network exposure via destructive firewall rule replacement

Published Sep 18, 2025 · Updated Sep 18, 2025

Firewall mishandling in PureVPN Linux CLI 2.0.1 and GUI 2.10.0 allows remote attackers to reach previously blocked services. On VPN connection, both clients flush existing iptables rules and set the INPUT policy to ACCEPT, then fail to restore the prior state after disconnection. Exposure follows when the affected client runs on a Linux host that relies on UFW, container, or custom iptables rules for network protection.

CVSS severity3.7
Low
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Firewall mishandling in PureVPN Linux CLI 2.0.1 and GUI 2.10.0 allows remote attackers to reach previously blocked services. On VPN connection, both clients flush existing iptables rules and set the INPUT policy to ACCEPT, then fail to restore the prior state after disconnection. Exposure follows when the affected client runs on a Linux host that relies on UFW, container, or custom iptables rules for network protection.

The record

CVE
CVE-2025-59692
Published
Sep 18, 2025
Updated
Sep 18, 2025
Vendor
PureVPN
Product
PureVPN
Classifications
CWE-669, T1562.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=CLI 2.0.1
  2. Affected versionversion=GUI 2.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PureVPN · PureVPNversion=CLI 2.0.1; version=GUI 2.10.0

Published CVSS scores

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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-669Incorrect Resource Transfer Between Spheres
T1562.004Impair Defenses: Disable or Modify System Firewall

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo