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CVE-2026-19318

Fireware OS Pre-Authentication Stack Buffer Overflow in iked Allows Remote Code Execution

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 2026.2.2, 12.12.2, 12.5.20, 2026.3.1
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total

Summary

A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: total

  3. Record last updated

Affected versions

  • WatchGuard Fireware OS

    From 2025.0 · fixed in 2026.2.2; From 12.0 · fixed in 12.12.2

  • WatchGuard Fireware OS

    From 12.0 · fixed in 12.5.20; From 2026.3 · fixed in 2026.3.1

References 1

psirt.watchguard.com