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CVE-2026-86133 Details
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
CVSS 4.0 Severity and Vector Strings:
CNA: WatchGuard Technologies, Inc.CVSS-B:8.2 HIGHVector:CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.x Severity and Vector Strings:
No CVSS 3.x data is available for this CVE.
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Sep 30, 2026Exploitation: NoneAutomatable: NoTechnical Impact: Partial
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://psirt.watchguard.com/CVE-2026-86133 | WatchGuard Technologies, Inc. |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-1284 | Improper Validation of Specified Quantity in Input | WatchGuard Technologies, Inc. |
| CWE-191 | Integer Underflow (Wrap or Wraparound) | WatchGuard Technologies, Inc. |
Affected Products
No affected product data is available for this CVE.
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 30, 2026 | CVE Modified | CISA-ADP |
| Sep 30, 2026 | New CVE Received | WatchGuard Technologies, Inc. |