Vulnerability · Published Jul 2, 2026 · Assigned by WatchGuard
CVE-2026-13373WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Tigerpaw Technology Integration Configuration
Medium 4.8
In plain English
A medium-severity cross-site scripting in Fireware OS from WatchGuard. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Severity (CVSS 4.0)4.8Medium
Exploit odds (30 days)0.3%top 80.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (Tigerpaw Technology Integration module) allows Stored XSS. This vulnerability is an additional unmitigated attack path for CVE-2025-13936.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WatchGuard | Fireware OS | 2025.1 – before 2026.2.112.4 – before 12.12.1 |
| WatchGuard | Fireware OS | 12.4 – before 12.11.9 |
| WatchGuard | Fireware OS | 12.4 – before 12.5.19 |
Weakness: CWE-79 · Vector: 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
References
- https://psirt.watchguard.com/CVE-2026-13373 vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00015 vendor-advisory