CVE-2025-8259: Vaelsys

Critical severity, CVSS 9.8. EPSS: 3.2% chance of exploitation in the next 30 days.

A vulnerability was identified in Vaelsys VaelsysV4 up to 5.1.0/5.4.0. Affected by this issue is the function execute_DataObjectProc of the file /grid/vgrid_server.php of the component Web interface. Such manipulation of the argument xajaxargs leads to os command injection. The attack can be executed remotely. The exploit is publicly available and might be used. Upgrading to version 5.1.1 and 5.4.1 can resolve this issue. It is suggested to upgrade the affected component.

Affected products

• Vaelsys Vaelsys: version 4.1.0 only

Published 2025-07-28. Last modified 2026-06-17.