CVE-2026-78414Cross-site scripting in Nx Witness VMS Web Administration allows session token exfiltration via a rogue peer site name
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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.
- CVSS
- 8.0 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- NX
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Network Optix Nx Witness VMS network_optix:nx_witness_vms (from the name) | before 6.1.3 | CNA record |
References
- https://support.networkoptix.com/hc/en-us/articles/42950508518679-Security-Advisory-Cross-Site-Scripting-XSS-in-Merge-with-Another-Site-Dropdownvendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.