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VULNERABILITIES

CVE-2026-103594 Details

Description

A stack-based buffer overflow vulnerability in Fireware OS's WireGuard configuration processing allows a remote attacker that has man-in-the-middle TLS-decrypted access between the Firebox and WatchGuard Cloud to create a Denial of Service condition and potentially execute arbitrary code by tampering with a FireCloud Gateway configuration payload.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://psirt.watchguard.com/CVE-2026-103594 WatchGuard Technologies, Inc.

Weakness Enumeration

CWE-IDCWE NameSource
CWE-121Stack-based Buffer OverflowWatchGuard Technologies, Inc.
CWE-1284Improper Validation of Specified Quantity in InputWatchGuard Technologies, Inc.
CWE-787Out-of-bounds WriteWatchGuard Technologies, Inc.

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-103594
NVD Published Date:
Oct 27, 2026
NVD Last Modified:
Nov 4, 2026
Source:
WatchGuard Technologies, Inc.
CVE-2026-103594 Details - Not Deferred