ClosedPatched

WatchGuard Firebox: Firebox Out of Bounds Write Vulnerability

WatchGuard Firebox

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. Added to CISA KEV on 2025-12-19.

Why this severity: CVSS 9.3 (CNA, v4.0); actively exploited (CISA KEV); known ransomware use

Started: Dec 19, 2025
Closed: Dec 19, 2025
CVE: CVE-2025-14733

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Updated Dec 19, 2025

Affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

Fixed in

See vendor advisory linked in sources

Timeline1

Dec 19, 2025
CISA added CVE-2025-14733 to the KEV catalog (due 2025-12-26).

Advisories3

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025).

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