Description
An integer underflow vulnerability in the WatchGuard Fireware OS IKEv2 daemon (iked) allows a remote, unauthenticated attacker to crash the process by sending a specially crafted encrypted IKEv2 message negotiated with an AES-GCM cipher suite.
Published: 2026-09-29
Score: 8.2 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

Vendor Solution

Fireware OS 2026.3.2, Fireware OS 2026.2.3, Fireware OS 12.12.3, Fireware OS 12.5.21

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Tue, 29 Sep 2026 23:30:00 +0000

Type Values Removed Values Added
Description An integer underflow vulnerability in the WatchGuard Fireware OS IKEv2 daemon (iked) allows a remote, unauthenticated attacker to crash the process by sending a specially crafted encrypted IKEv2 message negotiated with an AES-GCM cipher suite.
Title Fireware OS Pre-Authentication Integer Underflow in iked Allows Denial of Service
First Time appeared Watchguard
Watchguard fireware Os
Weaknesses CWE-191
CPEs cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
Vendors & Products Watchguard
Watchguard fireware Os
References
Metrics cvssV4_0

{'score': 8.2, 'vector': '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'}


Subscriptions

Watchguard Fireware Os
cve-icon MITRE

Status: PUBLISHED

Assigner: WatchGuard

Published:

Updated: 2026-09-29T23:05:47.422Z

Reserved: 2026-09-05T02:57:30.608Z

Link: CVE-2026-86132

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-30T00:16:36.957

Modified: 2026-09-30T00:16:36.957

Link: CVE-2026-86132

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-191

    Integer Underflow (Wrap or Wraparound)