December 19, 2025 · Applied Cybernetics Group
CVE-2025-14733 — WatchGuard Firebox
WatchGuard Firebox Out of Bounds Write Vulnerability
- Added to KEV
2025-12-19- Federal due date
2025-12-26- Vendor
- WatchGuard
- Product
- Firebox
- EPSS
- 96.6th percentile (score 0.278, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-14733
CISA short description
WatchGuard Fireware OS iked process contains an out of bounds write vulnerability in the OS iked process. This vulnerability may allow a remote unauthenticated attacker to execute arbitrary code and affects both the mobile user VPN with IKEv2 and the branch office VPN using IKEv2 when configured with a dynamic gateway peer.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.