CVE-2026-86133
Last modified
CVE-2026-86133 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked) allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service.. EPSS estimates a 0.34% chance of exploitation in the next 30 days.
Description
An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked) allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Watchguard | Fireware | >= 12.0, < 12.5.21 |
| Watchguard | Fireware | >= 12.12, < 12.12.3 |
| Watchguard | Fireware | >= 2025.0, < 2026.2.3 |
| Watchguard | Fireware | >= 2026.3, < 2026.3.2 |
References
- https://psirt.watchguard.com/CVE-2026-86133Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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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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