CVE-2025-1239— WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Blocked Sites List
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是美国WatchGuard公司的一个在 Firebox 上运行的软件。 WatchGuard Fireware OS 12.0至12.5.12+701324版本和12.6至12.11版本存在安全漏洞，该漏洞源于网页生成过程中输入中和不当，容易受到存储型跨站脚本攻击。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1189 · Drive-by CompromiseAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| WatchGuard | Fireware OS | 12.0< 12.11.1 |
affected |
12.0< 12.5.13 |
affected |
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I. Basic Information for CVE-2025-1239
Vulnerability Information
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Vulnerability Title
WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Blocked Sites List
Source: CVE Program / CVE List V5
Vulnerability Description
A stored cross-site scripting (XSS) vulnerability exists in the management interface of WatchGuard Firebox appliances via the Blocked Sites list. An authenticated remote attacker with administrator privileges could exploit this vulnerability to execute arbitrary JavaScript code in the Firebox management interface of another management user.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WatchGuard Fireware OS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WatchGuard Fireware OS是美国WatchGuard公司的一个在 Firebox 上运行的软件。 WatchGuard Fireware OS 12.0至12.5.12+701324版本和12.6至12.11版本存在安全漏洞，该漏洞源于网页生成过程中输入中和不当，容易受到存储型跨站脚本攻击。
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 | 12.0 ~ 12.11.1 | - |
|
| WatchGuard | Fireware OS | 12.0 ~ 12.5.13 | - |
|
II. Public POCs for CVE-2025-1239
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2025-1239 (1)
-
🔗 404 - File Not Found | WatchGuard Technologies vendor-advisory
Same Patch Batch · WatchGuard · 2025-02-14 · 3 CVEs total
| CVE-2025-0178 | 5.1 MEDIUM | WatchGaurd Firebox Host Header Injection Vulnerability |
| CVE-2025-1071 | 4.8 MEDIUM | WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in spamBlocker Module |
IV. Related Vulnerabilities
Same product: Fireware OS
-
CVE-2026-13053
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CVE-2026-13050
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CVE-2026-13054
WatchGuard Firebox Arbitrary File Write via Path Traversal i -
CVE-2026-8247
WatchGuard Firebox admd Out of Bounds Write Vulnerability -
CVE-2026-13728
WatchGuard Firebox Hardcoded Fallback Encryption Key in Acce
Same vendor: WatchGuard
-
CVE-2026-13053
WatchGuard Firebox Authenticated Out of Bounds Write in Mana -
CVE-2026-13050
WatchGuard Firebox networkd Out of Bounds Write Vulnerabilit -
CVE-2026-13054
WatchGuard Firebox Arbitrary File Write via Path Traversal i -
CVE-2026-13079
WatchGuard Mobile VPN with SSL Windows Client Local Privileg -
CVE-2026-8247
WatchGuard Firebox admd Out of Bounds Write Vulnerability
Same weakness: CWE-79
-
CVE-2026-8630
justhtml before 1.12.0 Mutation XSS via Raw Text Elements -
CVE-2026-8445
justhtml before 1.12.0 Sanitizer Bypass via Markdown -
CVE-2026-77088
justhtml 0.9.0 through 1.21.0 Cross-Site Scripting via code- -
CVE-2026-74793
justhtml before 3.11.0 XSS via selectedcontent projection -
CVE-2026-6827
justhtml before 1.17.0 Multiple Cross-Site Scripting Vulnera
V. Comments for CVE-2025-1239
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