An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked) allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
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:*:*:*:*:*:*:*:*
|
12.0
|
12.5.21
|
|
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
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
|