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Known Exploited Vulnerability
9.8
CRITICAL CVSS 3.1
CVE-2025-14733
WatchGuard Firebox Out of Bounds Write Vulnerability - [Actively Exploited]
Description

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS 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.This vulnerability affects Fireware OS 11.10.2 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.5 and 2025.1 up to and including 2025.1.3.

INFO

Published Date :

Dec. 19, 2025, 1:16 a.m.

Last Modified :

Dec. 19, 2025, 7:15 p.m.

Remotely Exploit :

Yes !

Source :

5d1c2695-1a31-4499-88ae-e847036fd7e3
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

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.

Notes :

Check for signs of potential compromise on all internet accessible instances after applying mitigations. For more information please see: https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00027 ; https://nvd.nist.gov/vuln/detail/CVE-2025-14733

Affected Products

The following products are affected by CVE-2025-14733 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Watchguard fireware
2 Watchguard firebox_m270
3 Watchguard firebox_m290
4 Watchguard firebox_m370
5 Watchguard firebox_m390
6 Watchguard firebox_m440
7 Watchguard firebox_m470
8 Watchguard firebox_m4800
9 Watchguard firebox_m570
10 Watchguard firebox_m5800
11 Watchguard firebox_m590
12 Watchguard firebox_m670
13 Watchguard firebox_m690
14 Watchguard firebox_t15
15 Watchguard firebox_t20
16 Watchguard firebox_t35
17 Watchguard firebox_t40
18 Watchguard firebox_t55
19 Watchguard firebox_t70
20 Watchguard firebox_t80
21 Watchguard fireboxcloud
22 Watchguard fireboxv
23 Watchguard fireware_os
24 Watchguard firebox_m4600
25 Watchguard firebox_m5600
26 Watchguard firebox_nv5
27 Watchguard firebox_t25
28 Watchguard firebox_t45
29 Watchguard firebox_t85
30 Watchguard firebox_t115-w
31 Watchguard firebox_t125
32 Watchguard firebox_t125-w
33 Watchguard firebox_t145
34 Watchguard firebox_t145-w
35 Watchguard firebox_t185
: Total Affected Vendor : 1 | Products : 35
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 CRITICAL [email protected]
CVSS 4.0 CRITICAL 5d1c2695-1a31-4499-88ae-e847036fd7e3
CVSS 4.0 CRITICAL 5d1c2695-1a31-4499-88ae-e847036fd7e3
Solution
Update WatchGuard Fireware OS to a patched version to fix an out-of-bounds write vulnerability.
  • Update Fireware OS to a non-vulnerable version.
  • Apply the latest security patches from WatchGuard.
  • Reconfigure affected VPN settings if needed.
Public PoC/Exploit Available at Github

CVE-2025-14733 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-14733.

URL Resource
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00027 Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14733
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-14733 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-14733 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
Ashwesker/Blackash-CVE-2025-14733

CVE-2025-14733

Python

Updated: 2 days, 16 hours ago
0 stars 0 fork 0 watcher
Born at : Dec. 19, 2025, 11:13 a.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-14733 vulnerability anywhere in the article.

  • TheCyberThrone
CVE-2025-14733: Critical WatchGuard Firebox RCE Actively Exploited

OverviewCVE-2025-14733 is a critical remote code execution (RCE) vulnerability in WatchGuard Fireware OS that allows unauthenticated attackers to take over Firebox firewall appliances via IKEv2 VPN fu ... Read more

Published Date: Dec 20, 2025 (2 days, 2 hours ago)
  • security.nl
WatchGuard waarschuwt voor actief misbruikt beveiligingslek in firewalls

Firewall-leverancier WatchGuard waarschuwt voor een actief misbruikte kwetsbaarheid in de firewalls die het levert. Er zijn gisteren beveiligingsupdates uitgebracht om het probleem te verhelpen. Sinds ... Read more

Published Date: Dec 19, 2025 (2 days, 15 hours ago)
  • The Hacker News
WatchGuard Warns of Active Exploitation of Critical Fireware OS VPN Vulnerability

Dec 19, 2025Ravie LakshmananVulnerability / Network Security WatchGuard has released fixes to address a critical security flaw in Fireware OS that it said has been exploited in real-world attacks. T ... Read more

Published Date: Dec 19, 2025 (2 days, 16 hours ago)
  • BleepingComputer
New critical WatchGuard Firebox firewall flaw exploited in attacks

WatchGuard has warned customers to patch a critical, actively exploited remote code execution (RCE) vulnerability in its Firebox firewalls. Tracked as CVE-2025-14733, this security flaw affects firewa ... Read more

Published Date: Dec 19, 2025 (2 days, 17 hours ago)
  • CybersecurityNews
WatchGuard 0-day Vulnerability Exploited in the Wild to Hijack Firewalls

An urgent security update has been released to fix a critical zero-day vulnerability in WatchGuard Firebox firewalls. With warnings that hackers are already actively exploiting the flaw in the wild to ... Read more

Published Date: Dec 19, 2025 (2 days, 19 hours ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-14733 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Dec. 19, 2025

    Action Type Old Value New Value
    Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14733
  • Initial Analysis by [email protected]

    Dec. 19, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CPE Configuration AND OR *cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:* versions from (including) 11.10.2 up to (excluding) 12.5.15 OR cpe:2.3:h:watchguard:firebox_t15:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t35:*:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:* versions from (including) 11.10.2 up to (excluding) 12.11.6 OR cpe:2.3:h:watchguard:firebox_m270:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m290:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m370:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m390:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m440:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m4600:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m470:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m4800:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m5600:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m570:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m5800:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m590:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m670:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m690:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_nv5:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t20:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t25:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t40:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t45:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t55:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t70:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t80:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t85:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:fireboxcloud:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:fireboxv:*:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:* versions from (including) 2025.1 up to (excluding) 2025.1.4 OR cpe:2.3:h:watchguard:firebox_t115-w:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t125:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t125-w:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t145:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t145-w:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t185:*:*:*:*:*:*:*:*
    Added Reference Type WatchGuard Technologies, Inc.: https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00027 Types: Vendor Advisory
  • New CVE Received by 5d1c2695-1a31-4499-88ae-e847036fd7e3

    Dec. 19, 2025

    Action Type Old Value New Value
    Added Description An Out-of-bounds Write vulnerability in WatchGuard Fireware OS 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.This vulnerability affects Fireware OS 11.10.2 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.5 and 2025.1 up to and including 2025.1.3.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Red
    Added CWE CWE-787
    Added Reference https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00027
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 9.3
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact