# CVE-2025-13937

## Summary

- **CVE ID:** CVE-2025-13937
- **Severity:** MEDIUM
- **CVSS Score:** 4.8 (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)
- **CWE:** CWE-79, CWE-79
- **Published:** Dec 4, 2025
- **Last Modified:** Aug 10, 2026

## Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (ConnectWise Technology Integration module) allows Stored XSS.This issue affects Fireware OS 12.4 up to and including 12.11.4, 12.5 up to and including 12.5.13, and 2025.1 up to and including 2025.1.2.

## Affected Products

- WatchGuard — Fireware OS (12.4)
- WatchGuard — Fireware OS (12.5)
- WatchGuard — Fireware OS (2025.1)
- WatchGuard — Fireware OS (12.0)

## References

- [CNA](https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00022)
- [CNA](https://psirt.watchguard.com/CVE-2025-13937)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.20%
- **EPSS Percentile:** 9.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._