CVE-2025-9242
CVSS v3
9.8
CRITICAL
EPSS Score
61.6 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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.
CISA Known Exploited Vulnerability
- Date Added
- 2025-11-12
- Patch Due Date
- 2025-12-03
- Ransomware Use
- Unknown
Technical details
- Published
- 2025-09-17
Frequently asked questions
What is CVE-2025-9242?
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.
Is CVE-2025-9242 actively exploited?
Yes. CVE-2025-9242 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 12/3/2025.
What is the CVSS score for CVE-2025-9242?
CVE-2025-9242 has a CVSS v3 base score of 9.8 (CRITICAL severity).
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