CVE-2026-13374

Summary

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 vulnerability is an additional unmitigated attack path for CVE-2025-13937.

This issue affects Fireware OS 12.4 up to and including 12.12, 12.5 up to and including 12.5.18, and 2025.1 up to and including 2026.2.

Affected Software

VendorProductVersion RangeStatus
WatchGuardFireware OS12.4 <= 12.12affected
WatchGuardFireware OS12.5 <= 12.5.18affected
WatchGuardFireware OS2025.1 <= 2026.2affected

Weaknesses

  • CWE-79: CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

References