CVE-2026-81851
Last modified
CVE-2026-81851 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. A heap-based buffer overflow vulnerability in Fireware OS's iked process allows an authenticated administrator to crash the IKE daemon (iked), resulting in a denial of service, by saving a specially crafted configuration.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.
Description
A heap-based buffer overflow vulnerability in Fireware OS's iked process allows an authenticated administrator to crash the IKE daemon (iked), resulting in a denial of service, by saving a specially crafted configuration.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| WatchGuard | Fireware OS | >= 2025.0, < 2026.2.1; >= 12.0, < 12.12.1 |
| WatchGuard | Fireware OS | >= 12.0, < 12.11.9 |
| WatchGuard | Fireware OS | >= 12.0, < 12.5.18 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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