CVE-2025-6947

WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in SIP Proxy Configuration

At a glance

Severity: MEDIUM 4.8
EPSS: EPSS 0.48 % · percentile 41 (2026-10-27)
State: PUBLISHED
Published: 2025-09-15
Updated: 2026-08-07
Assigner: WatchGuard
NVD status: Deferred

Description

A stored cross-site scripting (XSS) vulnerability exists in the management interface of WatchGuard Firebox appliances via the SIP Proxy configuration. An authenticated remote attacker with administrator privileges could exploit this vulnerability to execute arbitrary JavaScript code in the Firebox management interface of another management user.

Scores

Version	Score	Vector	Scored by
CVSS 4.0	MEDIUM 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	WatchGuard
CVSS 4.0	MEDIUM 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/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	NVD · 5d1c2695-1a31-4499-88ae-e847036fd7e3 (Secondary)

Weaknesses (CWE)

CWE-79

European references

ENISA EUVD · EUVD-2025-29269
GCVE · GCVE-0-2025-6947

Affected products

Product	Versions
WatchGuard · Fireware OS	affected 12.0 < 12.11.3
WatchGuard · Fireware OS	affected 12.0 < 12.5.13

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD