CVE-2026-41287

Stack-based Buffer Overflow in WatchGuard Agent Discovery Service on Windows Causes Denial of Service - Variant A

Published May 6, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Description
Stack-based Buffer Overflow vulnerability in the WatchGuard Agent discovery service on Windows allows Overflow Buffers. An unauthenticated attacker on the same local network could exploit this vulnerability to crash the agent service.

Remediation

Vendor Solution

WatchGuard Agent 1.25.03.0000

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Watchguard watchguard Agent
CPEs cpe:2.3:a:watchguard:single_watchguard_agent:*:*:*:*:*:*:*:* cpe:2.3:a:watchguard:watchguard_agent:*:*:*:*:*:*:*:*
Vendors & Products Watchguard watchguard Agent
References
Type Values Removed Values Added
First Time appeared Watchguard agent
CPEs cpe:2.3:a:watchguard:agent:*:*:*:*:*:windows:*:*
Vendors & Products Watchguard agent
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Stack-based Buffer Overflow vulnerability in the WatchGuard Agent discovery service on Windows allows Overflow Buffers. An unauthenticated attacker on the same local network could exploit this vulnerability to crash the agent service.
Title Stack-based Buffer Overflow in WatchGuard Agent Discovery Service on Windows Causes Denial of Service - Variant A
First Time appeared Watchguard
Watchguard single Watchguard Agent
Weaknesses CWE-121
CPEs cpe:2.3:a:watchguard:single_watchguard_agent:*:*:*:*:*:*:*:*
Vendors & Products Watchguard
Watchguard single Watchguard Agent
References
Metrics cvssV4_0

{'score': 7.1, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
WatchGuard
Published
Updated
Aug 10, 2026, 4:50 PM
Reserved
Apr 20, 2026, 9:57 AM
Status
Modified
Published
May 6, 2026, 3:16 PM
Modified
Oct 26, 2026, 7:10 PM