CVE-2025-8259CRITICAL 9.8EPSS p86.7%

CVE-2025-8259CVE-2025-8259

Description

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS3.25% probability of exploitation · percentile 86.7% · 2026-06-19T12:03:05Z
Published2025-07-28
Last modified2026-04-29

Underlying weaknesses· 2

CWE-77CWE-78

References

  1. https://github.com/waiwai24/0101/blob/main/CVEs/Vaelsys/Remote_Code_Execution_in_Vaelsys_V4_Platform.md
  2. https://vaelsys.github.io/security-advisory/advisories/VSEC_V4_2025_07_0001.html
  3. https://vuldb.com/submit/616920
  4. https://vuldb.com/vuln/317847
  5. https://vuldb.com/vuln/317847/cti

2

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in a Command ('Command Injection')cwe-770%live
WeaknessImproper Neutralization of Special Elements used in an OS Command ('OS Command Injection')cwe-780%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.