CVE-2025-8261

medium

Description

A weakness has been identified in Vaelsys VaelsysV4 4.1.0. This vulnerability affects unknown code of the file /grid/vgrid_server.php of the component User Creation Handler. Executing a manipulation can lead to improper authorization. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The real existence of this vulnerability is still doubted at the moment. The vendor explains: "Based on Vaelsys' analysis, the reported behavior does not allow actions beyond those already permitted to authenticated administrative users, and no change in system configuration or operational practices is necessary."

References

https://vuldb.com/vuln/317849/cti

https://vuldb.com/vuln/317849

https://vuldb.com/submit/616924

https://vaelsys.github.io/security-advisory/advisories/VSEC_V4_2025_07_0003.html

https://github.com/waiwai24/0101/blob/main/CVEs/Vaelsys/Unauthorized_User_Creation_Vulnerability_Exists_in_Vaelsys_V4_Platform.md

Details

Source: Mitre, NVD

Published: 2025-07-28

Updated: 2026-04-29

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 6.9

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00038