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TI-2025-07561 Aliases CVE-2025-8261GHSA-7xg6-2whq-73vv

Vaelsys VaelsysV4 User Creation vgrid_server.php improper authorization

Priority HIGH 70CWE-266Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation, Security bypass
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266 and CWE-285.

Summary

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."

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00738 54th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

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
VaelsysVaelsysV44.1.0—No fix listedCNA
  • VaelsysV4 VendorVaelsys Affected 4.1.0 Fixed in — No fix listed 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

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-8261
  2. 2026-10-03 Alias added: GHSA-7xg6-2whq-73vv
  3. 2026-10-18 EPSS moved to the 50th–90th percentile

References

Exploit 1

Other 1

  • TI-2026-02544 Vaelsys HTTP POST Request tree_server.php os command injection CVSS 4.0MEDIUM 6.9
  • TI-2025-07559 Vaelsys VaelsysV4 Web interface vgrid_server.php execute_DataObjectProc os command injection 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