Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-18105— Fireware OS Uncontrolled Resource Consumption in Diagnostic Tasks Allows Denial of Service

Quick assessment

Affected
WatchGuard Fireware OS
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.

在 Fireware OS 的“诊断任务”功能中存在一个不受控的资源消耗漏洞。低权限的认证用户可通过 Web 界面反复启动并中止一个特制的诊断任务，从而导致系统诊断工具发生拒绝服务（DoS）故障。

CVSS 7.1 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-18105

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Fireware OS Uncontrolled Resource Consumption in Diagnostic Tasks Allows Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
An uncontrolled resource consumption vulnerability in Fireware OS's diagnostic tasks feature allows a low-privileged, authenticated user to cause a denial of service of the system's diagnostic tools by repeatedly starting and aborting a specially crafted diagnostic task through the web UI.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WatchGuard Fireware OS 2026.3 ~ 2026.3.2 -
WatchGuard Fireware OS 12.0 ~ 12.5.21 -

II. Public POCs for CVE-2026-18105

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-18105

请登录查看更多情报信息。

Other References for CVE-2026-18105 (1)

Same Patch Batch · WatchGuard · 2026-09-29 · 14 CVEs total

CVE-2026-86131 9.2 CRITICAL Fireware OS Code Injection in BOVPN Over TLS Client Allows Remote Code Execution
CVE-2026-81433 8.7 HIGH Fireware OS Pre-Authentication Stack Buffer Overflow in fingerd Allows Remote Code Executi
CVE-2026-86104 8.7 HIGH Fireware OS Resource Exhaustion in Login Process Allows Denial of Service
CVE-2026-18145 8.6 HIGH Fireware OS Stack-based Buffer Overflow in spamd Allows Remote Code Execution
CVE-2026-13224 8.2 HIGH Fireware OS Path Traversal in WebUI Management Agent Allows Arbitrary Local File Read
CVE-2026-86128 8.2 HIGH Fireware OS NULL Pointer Dereference in NetFlow IPv6 Traffic Processing Allows Remote Deni
CVE-2026-86132 8.2 HIGH Fireware OS Pre-Authentication Integer Underflow in iked Allows Denial of Service
CVE-2026-86133 8.2 HIGH Fireware OS Pre-Authentication Integer Underflow in iked Allows Remote Denial of Service
CVE-2026-13046 7.5 HIGH Fireware OS Deserialization of Untrusted Data in samld Allows Remote Code Execution
CVE-2026-86101 7.2 HIGH Fireware OS Authorization Bypass in SAML Login Allows Unauthorized SSLVPN Access
CVE-2026-90441 7.1 HIGH Fireware OS Missing Authorization in wgagent Management API Allows Denial of Service - Var
CVE-2026-86136 7.1 HIGH Fireware OS Missing Authorization in wgagent Management API Allows Denial of Service - Var
CVE-2026-86105 5.3 MEDIUM Fireware OS Improper Authorization in Access Portal Reverse Proxy

IV. Related Vulnerabilities

Same product: Fireware OS
Same vendor: WatchGuard
Same weakness: CWE-400

V. Comments for CVE-2026-18105

No comments yet

Leave a comment