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9.3
CRITICAL CVSS 4.0
CVE-2025-9242
WatchGuard Firebox iked Out of Bounds Write Vulnerability
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 12.11.3 and 2025.1.

INFO

Published Date :

Sept. 17, 2025, 8:15 a.m.

Last Modified :

Oct. 16, 2025, 1:15 p.m.

Remotely Exploit :

Yes !

Source :

5d1c2695-1a31-4499-88ae-e847036fd7e3
Affected Products

The following products are affected by CVE-2025-9242 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_os
: Total Affected Vendor : 1 | Products : 1
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 4.0 CRITICAL 5d1c2695-1a31-4499-88ae-e847036fd7e3
CVSS 4.0 CRITICAL 5d1c2695-1a31-4499-88ae-e847036fd7e3
Solution
Update Fireware OS to a patched version to fix the out-of-bounds write vulnerability.
  • Update Fireware OS to a version later than 12.11.3.
  • Apply updates for versions 11.12.4 and 2025.1.
  • Contact vendor for specific patch information.
Public PoC/Exploit Available at Github

CVE-2025-9242 has a 2 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-2025-9242.

URL Resource
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00015
https://github.com/watchtowrlabs/watchTowr-vs-WatchGuard-CVE-2025-9242/blob/main/watchTowr-vs-WatchGuard-CVE-2025-9242.py
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-9242 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-2025-9242 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
pulsecipher/CVE-2025-9242

None

Updated: 21 hours, 19 minutes ago
2 stars 0 fork 0 watcher
Born at : Oct. 17, 2025, 8:21 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
nomi-sec/PoC-in-GitHub

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 11 hours, 17 minutes ago
7336 stars 1210 fork 1210 watcher
Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 829 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-2025-9242 vulnerability anywhere in the article.

  • The Hacker News
Researchers Uncover WatchGuard VPN Bug That Could Let Attackers Take Over Devices

Oct 17, 2025Ravie LakshmananVulnerability / VPN Security Cybersecurity researchers have disclosed details of a recently patched critical security flaw in WatchGuard Fireware that could allow unauthe ... Read more

Published Date: Oct 17, 2025 (1 day, 8 hours ago)
  • The Cyber Express
22 Vulnerabilities Under Attack – And Another That Could Be

Cyble researchers detailed 22 vulnerabilities under active attack in a blog post today – and nine of them aren’t in CISA’s Known Exploited Vulnerabilities (KEV) catalog. Twelve of the vulnerabilities ... Read more

Published Date: Sep 23, 2025 (3 weeks, 4 days ago)
  • Hackread - Latest Cybersecurity, Hacking News, Tech, AI & Crypto
WatchGuard Issues Fix for 9.3-Rated Firebox Firewall Vulnerability

WatchGuard has released security updates to fix a high-risk vulnerability in its Firebox firewalls. This issue, CVE-2025-9242, could allow a remote attacker to take control of a device. The company is ... Read more

Published Date: Sep 19, 2025 (4 weeks, 1 day ago)
  • security.nl
WatchGuard dicht kritiek firewall-lek dat aanvaller code laat uitvoeren

Securitybedrijf WatchGuard waarschuwt klanten voor een kritieke kwetsbaarheid in de firewalls die het levert en heeft beveiligingsupdates uitgebracht om het probleem te verhelpen. Via het beveiligings ... Read more

Published Date: Sep 18, 2025 (1 month ago)
  • BleepingComputer
WatchGuard warns of critical vulnerability in Firebox firewalls

WatchGuard has released security updates to address a remote code execution vulnerability impacting the company's Firebox firewalls. Tracked as CVE-2025-9242, this critical security flaw is caused by ... Read more

Published Date: Sep 18, 2025 (1 month ago)
  • CybersecurityNews
Critical WatchGuard Vulnerability Allows Unauthenticated Attacker to Execute Arbitrary Code

A critical vulnerability has been discovered in WatchGuard’s Firebox firewalls, which could allow a remote, unauthenticated attacker to execute arbitrary code on affected devices. The flaw, tracked as ... Read more

Published Date: Sep 17, 2025 (1 month ago)
  • Daily CyberSecurity
CVE-2025-9242: Critical WatchGuard Flaw Allows Remote Code Execution

WatchGuard has issued a security advisory addressing a critical vulnerability in its Fireware OS, tracked as CVE-2025-9242 with a CVSS v4 score of 9.3. The flaw resides in the iked process and could a ... Read more

Published Date: Sep 17, 2025 (1 month 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-2025-9242 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

    Oct. 16, 2025

    Action Type Old Value New Value
    Added Reference https://github.com/watchtowrlabs/watchTowr-vs-WatchGuard-CVE-2025-9242/blob/main/watchTowr-vs-WatchGuard-CVE-2025-9242.py
  • New CVE Received by 5d1c2695-1a31-4499-88ae-e847036fd7e3

    Sep. 17, 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 12.11.3 and 2025.1.
    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:X
    Added CWE CWE-787
    Added Reference https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00015
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