An integer underflow vulnerability in the WatchGuard Fireware OS IKEv2 daemon (iked) allows a remote, unauthenticated attacker to crash the process by sending a specially crafted encrypted IKEv2 message negotiated with an AES-GCM cipher suite.
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
|