CVE-2025-14733criticalunder attackransomwareCWE-787

CVE-2025-14733: critical vulnerability in WatchGuard Fireware OS

WatchGuard Firebox iked Out of Bounds Write Vulnerability

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83Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA and has a public proof of concept.

ssvc Actcvss 9.3epss 29%
from disclosure to weapon4 days
Published on NVDDec 19
1st PoC+4d
CISA KEVDec 19
Action required by CISAfederal deadline: 2025-12-26

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

In short

A critical flaw in WatchGuard Firebox allows attackers to write data outside safe memory boundaries through the VPN service, potentially letting them run malicious code on the device without needing a password. This affects multiple versions of Fireware OS.

Technical detail

Out-of-bounds write vulnerability in the IKEv2 daemon (iked) affecting Mobile User VPN and Branch Office VPN configurations with dynamic gateway peers. Remote unauthenticated attackers can exploit memory corruption to achieve arbitrary code execution; affects Fireware OS versions 11.10.2–11.12.4_Update1, 12.0–12.11.5, and 2025.1–2025.1.3.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

An Out-of-bounds Write vulnerability in the WatchGuard Fireware OS iked process may allow a remote unauthenticated attacker to execute arbitrary code. This vulnerability affects both the mobile user VPN with IKEv2 and the branch office VPN using IKEv2 when configured with a dynamic gateway peer. If the Firebox was previously configured with the mobile user VPN with IKEv2 or a branch office VPN using IKEv2 to a dynamic gateway peer, and both of those configurations have since been deleted, that Firebox may still be vulnerable if a branch office VPN to a static gateway peer is still configured.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/U:Red
Affected products
WatchGuard · Fireware OS
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