November 12, 2025 · Applied Cybernetics Group
CVE-2025-9242 — WatchGuard Firebox
WatchGuard Firebox Out-of-Bounds Write Vulnerability
- Added to KEV
2025-11-12- Federal due date
2025-12-03- Vendor
- WatchGuard
- Product
- Firebox
- EPSS
- 99.1th percentile (score 0.786, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-9242
CISA short 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.
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.