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CVE-2026-41286— Stack-based Buffer Overflow in WatchGuard Agent Discovery Service on Windows Causes Denial of Service - Variant B

Quick assessment

Affected
WatchGuard WatchGuard Agent
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WatchGuard Agent是美国WatchGuard公司的一款终端安全防护与设备管理代理程序。 WatchGuard Agent存在安全漏洞，该漏洞源于Windows上的发现服务存在基于栈的缓冲区溢出，可能导致同一本地网络上的未经身份验证的攻击者使代理服务崩溃。

CVSS 7.1 · High EPSS 0.35% · P26

Affected Version Matrix 1

VendorProduct Version RangeStatus
WatchGuard WatchGuard Agent 1.0.0.0< 1.25.03.0000 affected
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I. Basic Information for CVE-2026-41286

Vulnerability Information
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Vulnerability Title
Stack-based Buffer Overflow in WatchGuard Agent Discovery Service on Windows Causes Denial of Service - Variant B
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
WatchGuard Agent 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WatchGuard Agent是美国WatchGuard公司的一款终端安全防护与设备管理代理程序。 WatchGuard Agent存在安全漏洞，该漏洞源于Windows上的发现服务存在基于栈的缓冲区溢出，可能导致同一本地网络上的未经身份验证的攻击者使代理服务崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
WatchGuard WatchGuard Agent 1.0.0.0 ~ 1.25.03.0000 -

II. Public POCs for CVE-2026-41286

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III. Intelligence Information for CVE-2026-41286

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Vendor Advisories for CVE-2026-41286 (1)

Same Patch Batch · WatchGuard · 2026-05-06 · 5 CVEs total

CVE-2026-6787 8.5 HIGH Usage of a hard-coded cryptographic key in WatchGuard Agent allows inclusion of code into
CVE-2026-6788 8.5 HIGH Uncontrolled search path in PluginLauncher allows SYSTEM code execution in WatchGuard Agen
CVE-2026-41288 7.3 HIGH WatchGuard Agent on Windows Privilege Escalation Vulnerability
CVE-2026-41287 7.1 HIGH Stack-based Buffer Overflow in WatchGuard Agent Discovery Service on Windows Causes Denial

IV. Related Vulnerabilities

Same product: WatchGuard Agent
Same vendor: WatchGuard
Same weakness: CWE-121

V. Comments for CVE-2026-41286

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