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.

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

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