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CVE-2025-9242

WatchGuard Firebox iked Out of Bounds Write Vulnerability

Published: Sep 17, 2025Updated: Aug 10, 2026 Sources: CVE List NVD BDUCWE-787
9.8CRITICAL
NVD MITRE
EPSS Score
91.3%
Top 0.2%
CISA KEV
Active Exploitation
Since Nov 12, 2025
Exploits
1 Known
Remediation
Patch Available
Self-Check
Nuclei · OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-787

Affected Products

Watchguard Technologies Inc.
commercial·USaka WatchGuard
Fireware OS
Networking Infrastructure
fireware
Networking Infrastructure
and 1 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Nov 12, 2025
Remediation due:Dec 3, 2025

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.

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://psirt.watchguard.com/CVE-2025-9242
psirt.watchguard.com
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00015
watchguard.com
https://github.com/watchtowrlabs/watchTowr-vs-WatchGuard-CVE-2025-9242/blob/main/watchTowr-vs-WatchGuard-CVE-2025-9242.py
github.com
and 2 more references View all →
News mentions
1

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