SSH Administrative Access Vulnerability in WatchGuard Firebox Devices
CVE-2025-59396

9.8CRITICAL

Key Information:

Vendor

WatchGuard

Status
Firebox
Vendor
CVE Published:
6 November 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-59396?

The default configuration for WatchGuard Firebox devices through September 10, 2025, permits unauthorized administrative access via SSH on port 4118 using a publicly known readwrite password for the admin account. This vulnerability exposes critical network management interfaces, allowing attackers to potentially gain control over the system and execute malicious activities.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-59396
Created by cyberbyte000

References

https://www.watchguard.com/wgrd-products/firewalls
https://github.com/cyberbyte000/CVE-2025-59396/blob/main/...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability Reserved

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