CVE-2025-13937

published 2025-12-04

CVE-2025-13937: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (ConnectWise Technology…

Priority P4 26 medium 6.1 CVSS 3.1

AV N AC L PR N UI R S C C L I L A N

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.

Affected

10 ranges

Vendor	Product	Version range	Fixed in
watchguard	fireware	>= 12.0.0 < 12.11.5	12.11.5
watchguard	fireware	>= 12.4 < 12.12.1	12.12.1
watchguard	fireware	>= 12.5 < 12.5.14	12.5.14
watchguard	fireware	12.5 – 12.5.18	—
watchguard	fireware	>= 2025.1 < 2025.1.3	2025.1.3
watchguard	fireware	>= 2025.1 < 2026.2.1	2026.2.1
watchguard	fireware_os	>= 12.4 < 12.12.1	12.12.1
watchguard	fireware_os	>= 12.4 < 12.11.9	12.11.9
watchguard	fireware_os	>= 12.4 < 12.5.19	12.5.19
watchguard	fireware_os	>= 2025.1 < 2026.2.1	2026.2.1

CVSS provenance

nvd v3.1 6.1 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

nvd v4.0 4.8 MEDIUM 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

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-79