WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in ConnectWise Technology Integration Configuration

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-13374
StatePUBLISHED
AssignerWatchGuard
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-03 00:16:51 UTC
Updated2026-07-09 20:17:08 UTC
DescriptionImproper 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.

Risk And Classification

Primary CVSS: v4.0 4.8 MEDIUM from 5d1c2695-1a31-4499-88ae-e847036fd7e3

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

EPSS: 0.002920000 probability, percentile 0.210610000 (date 2026-07-09)

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

VersionSourceTypeScoreSeverityVector
4.05d1c2695-1a31-4499-88ae-e847036fd7e3Secondary4.8MEDIUMCVSS: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/C...
4.0CNACVSS4.8MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
3.1[email protected]Primary4.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
Passive
Confidentiality
None
Integrity
None
Availability
None
Sub Conf.
Low
Sub Integrity
Low
Sub Availability
None

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

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Watchguard Fireboxcloud - All All All
Hardware Watchguard Fireboxv - All All All
Hardware Watchguard Firebox M270 - All All All
Hardware Watchguard Firebox M290 - All All All
Hardware Watchguard Firebox M370 - All All All
Hardware Watchguard Firebox M390 - All All All
Hardware Watchguard Firebox M440 - All All All
Hardware Watchguard Firebox M4600 - All All All
Hardware Watchguard Firebox M470 - All All All
Hardware Watchguard Firebox M4800 - All All All
Hardware Watchguard Firebox M5600 - All All All
Hardware Watchguard Firebox M570 - All All All
Hardware Watchguard Firebox M5800 - All All All
Hardware Watchguard Firebox M590 - All All All
Hardware Watchguard Firebox M670 - All All All
Hardware Watchguard Firebox M690 - All All All
Hardware Watchguard Firebox Nv5 - All All All
Hardware Watchguard Firebox T20 - All All All
Hardware Watchguard Firebox T25 - All All All
Hardware Watchguard Firebox T40 - All All All
Hardware Watchguard Firebox T45 - All All All
Hardware Watchguard Firebox T55 - All All All
Hardware Watchguard Firebox T70 - All All All
Hardware Watchguard Firebox T80 - All All All
Hardware Watchguard Firebox T85 - All All All
Operating System Watchguard Fireware All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA WatchGuard Fireware OS affected 12.4 12.12 semver Not specified
CNA WatchGuard Fireware OS affected 12.5 12.5.18 semver Not specified
CNA WatchGuard Fireware OS affected 2025.1 2026.2 semver Not specified

References

ReferenceSourceLinkTags
www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00016 5d1c2695-1a31-4499-88ae-e847036fd7e3 www.watchguard.com Vendor Advisory
www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00015 MITRE www.watchguard.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

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

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report