Risk Letters

Exploited vulnerability

CVE-2025-14733

TLP:CLEAR

WatchGuard Firebox Out of Bounds Write Vulnerability

WatchGuard Fireware OS iked process contains an out of bounds write vulnerability in the OS iked process. This vulnerability may allow a remote unauthenticated attacker to execute arbitrary code and affects both the mobile user VPN with IKEv2 and the branch office VPN using IKEv2 when configured with a dynamic gateway peer.

Facts

  • Vendor: WatchGuard
  • Product: Firebox
  • CVSS: 9.3
  • EPSS (probability of exploitation within 30 days): 29.4 %
  • On CISA's Known Exploited Vulnerabilities list since: 19 December 2025
  • First known exploitation: 19 December 2025
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 26 December 2025
  • Weakness: CWE-787
  • First seen by Risk Letters: 19 December 2025

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD