A NULL pointer dereference vulnerability in the WatchGuard Fireware OS authentication process allows a remote, unauthenticated attacker to crash the management daemon by sending a specially request to the login interface, resulting in a denial of service.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 8
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Watchguard Fireware_Os
cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
|
2026.3
|
2026.3.2
|
|
Watchguard Fireware_Os
cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
|
2025.0
|
2026.2.3
|
|
Watchguard Fireware_Os
cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
|
12.0
|
12.12.3
|
|
Watchguard Fireware_Os
cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
|
12.0
|
12.5.21
|
|
Watchguard Fireware
cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*
|
12.0
|
12.5.21
|
|
Watchguard Fireware
cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*
|
12.12
|
12.12.3
|
|
Watchguard Fireware
cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*
|
2025.0
|
2026.2.3
|
|
Watchguard Fireware
cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*
|
2026.3
|
2026.3.2
|