CVE-2025-8261: 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...

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."

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

5.5/10

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/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.60%

44.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Vaelsys	Vaelsys	4.1.0

References

Timeline

Published: Jul 28, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-8261?

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."

How severe is CVE-2025-8261?

CVE-2025-8261 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.

How do I fix CVE-2025-8261?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.