CVE-2026-13084
WatchGuard Fireware OS IKEv2 DoS via null pointer dereference
Is CVE-2026-13084 being exploited?
Not confirmed. CVE-2026-13084 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.50% probability of exploitation in the next 30 days.
How severe is CVE-2026-13084?
CVE-2026-13084 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-13084?
Yes. A fix has been recorded for CVE-2026-13084. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-13084 affect?
CVE-2026-13084 affects WatchGuard Fireware OS 11.10.2-11.12.4_Update1, WatchGuard Fireware OS 12.0-12.12, WatchGuard Fireware OS 2025.1-2026.2. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-13084?
Apply latest Fireware OS patch; upgrade to fixed versions
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote unauthenticated DoS by sending crafted IKEv2 messages, potentially disrupting VPN services.
Patch when possible
- affected>= 2025.1 and < 2026.2.1
- affected>= 12.0 and < 12.12.1
- affected>= 11.10.2 and < *
- affected>= 12.0 and < 12.11.9
- affected>= 12.0 and < 12.5.19
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.