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TI-2025-07559 Aliases CVE-2025-8259GHSA-8wmv-6886-5g9j

Vaelsys VaelsysV4 Web interface vgrid_server.php execute_DataObjectProc os command injection

Priority HIGH 70CWE-77Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0323 88th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed VaelsysV4 (Vaelsys): 5.1.1, 5.4.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
VaelsysVaelsysV45.0; 5.1; 5.1.0; 5.2; 5.3; 5.4.05.1.1, 5.4.1Patch availableCNA
  • VaelsysV4 VendorVaelsys Affected 5.0; 5.1; 5.1.0; 5.2; 5.3; 5.4.0 Fixed in 5.1.1, 5.4.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:vaelsys:vaelsys:4.1.0:*:*:*:*:*:*:*4.1.0VulnerableVaelsys
  • cpe:2.3:a:vaelsys:vaelsys:4.1.0:*:*:*:*:*:*:* Versions 4.1.0 Vulnerable ·Vaelsys

Remediation

  • Fix · CNA VaelsysV4 (Vaelsys) Fixed in 5.1.1, 5.4.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-8259
  2. 2026-10-03 Alias added: GHSA-8wmv-6886-5g9j

References

Exploit 1

Patch 1

  • TI-2026-02544 Vaelsys HTTP POST Request tree_server.php os command injection CVSS 4.0MEDIUM 6.9
  • TI-2025-07561 Vaelsys VaelsysV4 User Creation vgrid_server.php improper authorization CVSS 4.0MEDIUM 6.9
  • TI-2025-07560 Vaelsys VaelsysV4 Web interface vgrid_server.php weak hash CVSS 4.0LOW 2.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences