UpHeron
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Servers and applications

CVE-2025-9242

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…

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 12 Nov 2025.

Severity
Critical 9.3
Published
17 Sept 2025
Last changed
10 Aug 2026
Added to UpHeron
3 Nov 2026
Fixed in
12.5.13, 12.11.4
Sources
NVD

Affected software

SoftwareAffected versions
WatchGuard Fireware OSServers and applications · cpe:o:watchguard:fireware
  • From 11.10.2 before 12.11.4
  • From 11.10.2 before 12.5.13
  • Version 2025.1

Known exploited

CISA name
WatchGuard Firebox Out-of-Bounds Write Vulnerability
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.
Due for US agencies
3 Dec 2025
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-9242
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-9242