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TI-2025-27740 Aliases CVE-2025-42605GHSA-26g6-6369-5jmc

Improper Access Control Vulnerability in Meon Bidding Solutions

Priority MEDIUM 49CWE-639Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

This vulnerability exists in Meon Bidding Solutions due to improper authorization controls on certain API endpoints for the initiation, modification, or cancellation operations. An authenticated remote attacker could exploit this vulnerability by manipulating parameter in the API request body to gain unauthorized access to other user accounts. Successful exploitation of this vulnerability could allow remote attacker to perform authorized manipulation of data associated with other user accounts.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0049 42nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MeonBidding Solutions1.2—No fix listedCNA
  • Bidding Solutions VendorMeon Affected 1.2 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-42605
  2. 2026-10-03 Alias added: GHSA-26g6-6369-5jmc

References

Advisory 1

  • TI-2025-27738 Information Disclosure Vulnerability in Meon KYC solutions CVSS 4.0HIGH 8.7
  • TI-2025-27735 Brute Force Attack Vulnerability in Meon KYC solutions CVSS 4.0HIGH 8.2
  • TI-2025-27739 Detailed Error Response Vulnerability in Meon KYC solutions CVSS 4.0MEDIUM 6.9
  • TI-2025-27737 Improper Authentication Vulnerability in Meon KYC solutions CVSS 4.0HIGH 8.2
  • TI-2025-27736 Captcha Bypass Vulnerability in Meon KYC solutions CVSS 4.0HIGH 8.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences