CVE-2025-9242: CWE-787 in WatchGuard Fireware OS
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.
AI Analysis
Technical Summary
This vulnerability (CWE-787) in WatchGuard Fireware OS's iked process involves an out-of-bounds write that can be triggered remotely without authentication. It affects VPN configurations using IKEv2 with dynamic gateway peers for mobile user VPNs and branch office VPNs. Residual vulnerability may persist if a branch office VPN to a static gateway peer remains configured after deleting the vulnerable VPN configurations. The CVSS 4.0 score is 9.3 (critical), indicating high impact with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows remote unauthenticated attackers to execute arbitrary code on the affected Firebox device. This can lead to full compromise of the device, potentially impacting network security and operations. The vulnerability affects confidentiality, integrity, and availability with high severity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the current data. Users should monitor WatchGuard advisories for updates and apply patches promptly once available. Until then, review VPN configurations, especially those involving IKEv2 with dynamic gateway peers, and consider temporary mitigations as recommended by the vendor.
CVE-2025-9242: CWE-787 in WatchGuard Fireware OS
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.
CVSS v4.0
Score 9.3critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-787) in WatchGuard Fireware OS's iked process involves an out-of-bounds write that can be triggered remotely without authentication. It affects VPN configurations using IKEv2 with dynamic gateway peers for mobile user VPNs and branch office VPNs. Residual vulnerability may persist if a branch office VPN to a static gateway peer remains configured after deleting the vulnerable VPN configurations. The CVSS 4.0 score is 9.3 (critical), indicating high impact with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows remote unauthenticated attackers to execute arbitrary code on the affected Firebox device. This can lead to full compromise of the device, potentially impacting network security and operations. The vulnerability affects confidentiality, integrity, and availability with high severity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the current data. Users should monitor WatchGuard advisories for updates and apply patches promptly once available. Until then, review VPN configurations, especially those involving IKEv2 with dynamic gateway peers, and consider temporary mitigations as recommended by the vendor.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- WatchGuard
- Date Reserved
- 2025-08-20T11:08:20.724Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 68ca64c1ac160e1955053429
Added to database: 09/17/2025, 07:35:29 UTC
Last enriched: 08/11/2026, 15:25:04 UTC
Last updated: 09/10/2026, 19:36:52 UTC
Views: 392
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