CVE-2025-8261: vaelsys Access Control Flaw — Exploit

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."

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CVSS v3.1 Score

7.3

HIGH

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

Weakness Type (CWE)

CWE-266 CWE-266

CWE-285 CWE-285

Affected Products

Vendor	Product	Versions
vaelsys	vaelsys	All

References

Exploits

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

Other References

https://vaelsys.github.io/security-advisory/advisories/VSEC_V4_2025_07_0003.html https://vuldb.com/submit/616924 https://vuldb.com/vuln/317849 https://vuldb.com/vuln/317849/cti

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." It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2025-8261? +

CVE-2025-8261 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-8261? +

CVE-2025-8261 affects products from vaelsys, specifically: vaelsys. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-8261? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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