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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-8247— WatchGuard Firebox admd Out of Bounds Write Vulnerability

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是美国WatchGuard公司的一款网络安全软件。 WatchGuard fireware 11.0版本至11.12.4_Update1版本、12.0版本至12.12版本、12.5版本至12.5.18版本和2025.1版本至2026.2版本存在缓冲区错误漏洞，该漏洞源于越界写入，可能导致同一本地网段的未认证攻击者执行任意代码。

CVSS 7.7 · High EPSS 0.27% · P19

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 5

VendorProduct Version RangeStatus
WatchGuard Fireware OS 2025.1< 2026.2.1 affected
12.0< 12.12.1 affected
11.0< * affected
12.0< 12.11.9 affected
12.0< 12.5.19 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-8247

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
WatchGuard Firebox admd Out of Bounds Write Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an unauthenticated attacker on the same local network segment to execute arbitrary code. This vulnerability affects Fireware OS 11.0 up to and including 11.12.4_Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
WatchGuard fireware 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WatchGuard fireware是美国WatchGuard公司的一款网络安全软件。 WatchGuard fireware 11.0版本至11.12.4_Update1版本、12.0版本至12.12版本、12.5版本至12.5.18版本和2025.1版本至2026.2版本存在缓冲区错误漏洞，该漏洞源于越界写入，可能导致同一本地网段的未认证攻击者执行任意代码。
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 Fireware OS 2025.1 ~ 2026.2.1 -
WatchGuard Fireware OS 12.0 ~ 12.11.9 -
WatchGuard Fireware OS 12.0 ~ 12.5.19 -

II. Public POCs for CVE-2026-8247

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-8247

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-8247 (2)

Same Patch Batch · WatchGuard · 2026-07-02 · 17 CVEs total

CVE-2026-13368 9.2 CRITICAL WatchGuard Firebox Race Condition and Use-After-Free in Mobile VPN with IKEv2 LDAP Authent
CVE-2026-13084 8.7 HIGH Null Pointer Dereference in WatchGuard Fireware OS iked Process
CVE-2026-13722 8.6 HIGH WatchGuard Firebox Firmware Image Validation Bypass in WatchGuard Fireware OS
CVE-2026-13383 8.6 HIGH WatchGuard Firebox ikestubd Out of Bounds Write Vulnerability
CVE-2026-13053 8.6 HIGH WatchGuard Firebox Authenticated Out of Bounds Write in Management CLI Command Handler
CVE-2026-13050 8.6 HIGH WatchGuard Firebox networkd Out of Bounds Write Vulnerability
CVE-2026-13054 8.6 HIGH WatchGuard Firebox Arbitrary File Write via Path Traversal in Management Web UI
CVE-2026-13384 8.6 HIGH WatchGuard Firebox wgagent Out of Bounds Write Vulnerability
CVE-2026-13079 7.3 HIGH WatchGuard Mobile VPN with SSL Windows Client Local Privilege Escalation
CVE-2026-13371 6.9 MEDIUM WatchGuard Firebox Management Web UI Denial of Service via Unsafe Deserialization
CVE-2026-13728 5.9 MEDIUM WatchGuard Firebox Hardcoded Fallback Encryption Key in Access Portal Resource Credential
CVE-2026-13377 4.8 MEDIUM WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in SIP Proxy Configurat
CVE-2026-13373 4.8 MEDIUM WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Tigerpaw Technology
CVE-2026-13376 4.8 MEDIUM WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in spamBlocker Module
CVE-2026-13375 4.8 MEDIUM WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Autotask Technology
CVE-2026-13374 4.8 MEDIUM WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in ConnectWise Technolo

IV. Related Vulnerabilities

Same product: Fireware OS
Same vendor: WatchGuard
Same weakness: CWE-120

V. Comments for CVE-2026-8247

No comments yet

Leave a comment