WatchGuard TechnologiesCVE-2026-13374
WatchGuard Technologies Fireware OS: cross-site scripting
Medium4.8CVE-2026-13374 · Published Jul 3, 2026 · updated Aug 28, 2026
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Fireware OS Product | >= 2025.1, < 2026.2.1 | 2026.2.1 |
| >= 12.4, < 12.12.1 | 12.12.1 | |
| >= 12.4, < 12.11.9 | 12.11.9 | |
| >= 12.4, < 12.5.19 | 12.5.19 |
Details and references
- CVSS 4.0
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-79
More WatchGuard Technologies advisories
All WatchGuard Technologies| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jul 3 | WatchGuard Technologies Fireware OS: improper signature check | High8.6 | 2026.2.1+2 more |
| Jul 3 | WatchGuard Technologies Fireware OS: hard-coded credentials | Medium5.9 | 2026.2.1+2 more |
| Jul 3 | WatchGuard Technologies Fireware OS: out-of-bounds write | High7.7 | 2026.2.1+3 more |
| Jul 3 | WatchGuard Technologies Fireware OS: denial of service | Medium6.9 | 2026.2.1+3 more |
| Jul 3 | WatchGuard Technologies Fireware OS: cross-site scripting | Medium4.8 | 2026.2.1+3 more |
| Jul 3 | WatchGuard Technologies Fireware OS: cross-site scripting | Medium4.8 | 2026.2.1+3 more |