CVE-2025-14733
Published: December 19, 2025
Official 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.
CISA KEV Advisory
WatchGuard Firebox Out of Bounds Write Vulnerability
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.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Risk Analysis
WatchGuard Fireware OS iked process has an out-of-bounds write vulnerability that allows a remote unauthenticated attacker to execute arbitrary code. This critical vulnerability, with a CVSS score of 9.8 and an EPSS score of 0.44160, is highly likely to be exploited and is confirmed to be actively exploited.
This vulnerability has been actively exploited in the wild and is listed in CISA's Known Exploited Vulnerabilities catalog. It is remotely exploitable without authentication, making it extremely dangerous.
Apply all available security patches and updates for WatchGuard Fireware OS. Disable IKEv2 VPN configurations if not strictly necessary, especially those with dynamic gateway peers, until patched.
Technical Analysis
CVE-2025-14733 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CISA has added CVE-2025-14733 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-14733 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1