WatchGuard Firebox Out-of-Bounds Write Vulnerability
Description
WatchGuard Firebox contains an out-of-bounds write vulnerability in the OS iked process that may allow a remote unauthenticated attacker to execute arbitrary code.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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Details
- Vendor
- WatchGuard
- Product
- WatchGuard Firebox
- CVE
- CVE-2025-9242
- Affected versions
- Fireware OS 11: from 11.0 to 11.12.4+541730
Fireware OS 12: from 12.0 to 12.11.4 (excluded); from 12.0 to 12.3.1+722811 (excluded); from 12.0 to 12.5.13 (excluded) — fixed in 12.11.4, 12.3.1+722811, 12.5.13
Fireware OS 2025: from 2025.0 to 2025.1.1 (excluded) — fixed in 2025.1.1 (from the advisory and NVD; check the exact builds in the official advisory) - CVSS score
- 9.8
- Actively exploited
- Yes, listed in the CISA Known Exploited Vulnerabilities catalog
- CISA due date
- December 3, 2025 (deadline for US federal agencies: a good benchmark for you too)
- Source
- CISA KEV – original advisory
- Published
- November 12, 2025
The description and the recommended action are quoted from the public advisory; severity, exploitation status and affected versions are compiled automatically from public sources and may contain errors. The vendor's original advisory prevails: check it before taking action. This information is provided without warranty and does not replace a professional assessment.