CVE-2026-78414

Cross-site scripting in Nx Witness VMS Web Administration allows session token exfiltration via a rogue peer site name

Published Aug 24, 2026 CVSS 3.1 · 8 High EPSS < 1% KEV · Not listed
Description
Cross-site scripting in the Web Administration interface of Network Optix Nx Witness VMS before version 6.1.3 on Linux, Windows and MacOS allows an adjacent-network attacker to execute arbitrary JavaScript in the browser of an authenticated administrator and steal the administrator's session token, resulting in Administrator Account Takeover. An attacker who controls an Nx server on the same network segment can set that server's site name to a script payload, which executes when an administrator opens the "Merge with Another Site" dialog and the site selection list is displayed.Solution:

Update to Nx Witness VMS version 6.1.3 or later.

Remediation

Vendor Solution

Update to Nx Witness VMS version 6.1.3 or later.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Network Optix
Network Optix nx Witness Vms
Vendors & Products Network Optix
Network Optix nx Witness Vms
Type Values Removed Values Added
Description Cross-site scripting in the Web Administration interface of Network Optix Nx Witness VMS before version 6.1.3 on Linux, Windows and MacOS allows an adjacent-network attacker to execute arbitrary JavaScript in the browser of an authenticated administrator and steal the administrator's session token, resulting in Administrator Account Takeover. An attacker who controls an Nx server on the same network segment can set that server's site name to a script payload, which executes when an administrator opens the "Merge with Another Site" dialog and the site selection list is displayed.Solution: Update to Nx Witness VMS version 6.1.3 or later.
Title Cross-site scripting in Nx Witness VMS Web Administration allows session token exfiltration via a rogue peer site name
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
NX
Published
Updated
Aug 24, 2026, 8:21 PM
Reserved
Aug 24, 2026, 2:46 PM
Status
Awaiting Analysis
Published
Aug 24, 2026, 3:16 PM
Modified
Oct 12, 2026, 3:10 PM