Stack-based buffer overflow in WatchGuard Agent on Windows - CVE-2026-41286
Published: May 6, 2026
Vulnerability identifier: #VU130266
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-41286
CWE-ID: CWE-121
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to stack-based buffer overflow in the WatchGuard Agent discovery service on Windows when handling discovery requests. A remote attacker can send a specially crafted discovery request to cause a denial of service.
Affected software
WatchGuard Agent on Windows
How to mitigate CVE-2026-41286
Install security update from vendor's website.
WatchGuard Agent on Windows - update to 1.25.03.0000