CVE-2026-10056

HighCVSS 7.5

Published: 29/05/2026(UTC)Updated: 21/07/2026(UTC)Translated: 22/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.24%

15th percentile - higher than 15% of all known CVEs

Summary

A CORS misconfiguration in the REST API of Network Optix Nx Witness VMS before version 6.1.2, running in the default Standard security mode on Linux and Windows, allows an unauthenticated remote attacker to steal an authenticated user's session token and perform Administrator Account Takeover via a malicious cross-origin web page.

Risk Assessment

An attacker can steal the administrator's session token and gain full control over the VMS system, compromising the confidentiality and integrity of the monitored environment.

Recommendation

Immediately update Nx Witness VMS to version 6.1.2 or later. If updating is not possible, set Access-Control-Allow-Credentials to false via PATCH /rest/v2/system/settings with body {"supportedOrigins": "null"}.

Other vulnerabilities in Network Optix Nx Witness VMS

CVE-2026-78414High
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.

Original NVD description (English source)

CORS misconfiguration in the REST API of Network Optix Nx Witness VMS before version 6.1.2, when running in the default Standard security mode, on Linux and Windows allows an unauthenticated remote attacker to steal the session token of an authenticated user and perform Administrator Account Takeover via a malicious cross-origin web page visited by the victim. The High security mode is not affected.Workaround: For existing installations running in Standard security mode, set Access-Control-Allow-Credentials to false via the REST API: PATCH /rest/v2/system/settings with body {"supportedOrigins": "null"}. Alternatively, select High security level during initial setup. Solution: Update to Nx Witness VMS version 6.1.2 or later, in which Access-Control-Allow-Credentials is set to false in the default Standard security configuration.