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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 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.

PUBLISHED Reserved 2026-06-25 | Published 2026-07-02 | Updated 2026-07-07 | Assigner WatchGuard




MEDIUM: 4.8CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Problem types

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

Product status

Default status
unaffected

12.4 (semver)
affected

12.5 (semver)
affected

2025.1 (semver)
affected

Credits

Simone Paganessi (https://www.linkedin.com/in/simonepaganessi) finder

References

www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00016 vendor-advisory

cve.org (CVE-2026-13374)

nvd.nist.gov (CVE-2026-13374)

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