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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-18145— Fireware OS Stack-based Buffer Overflow in spamd Allows Remote Code Execution

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.

WatchGuard Fireware OS 的 spamBlocker（spamd）服务中存在一个基于栈的缓冲区溢出漏洞，允许具有管理员权限的已认证攻击者通过发送特制的管理请求导致该服务崩溃或可能执行任意代码。

CVSS 8.6 · High
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-18145

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 Stack-based Buffer Overflow in spamd Allows Remote Code Execution
Source: CVE Program / CVE List V5
Vulnerability Description
A stack-based buffer overflow vulnerability in the spamBlocker (spamd) service of WatchGuard Fireware OS allows an authenticated attacker with administrator privileges to crash the service or potentially execute arbitrary code by sending a specially crafted management request.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/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

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-2026-18145

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-18145

请登录查看更多情报信息。

Other References for CVE-2026-18145 (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-2026-13224 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-2026-18105 7.1 HIGH Fireware OS Uncontrolled Resource Consumption in Diagnostic Tasks Allows Denial of Service
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-121

V. Comments for CVE-2026-18145

No comments yet

Leave a comment