Insufficient Verification of Data Authenticity in Mesalvo Meona Client and Server Components
CVE-2026-25602

2.3LOW

Key Information:

Vendor

Mesalvo

Status
Meona Server
Meona Client
Vendor
CVE Published:
20 May 2026

What is CVE-2026-25602?

A vulnerability in the Mesalvo Meona Client Launcher and Server Components allows unauthorized message sending to any email address. This stems from inadequate verification of data authenticity, potentially enabling malicious actors to exploit the system. It's crucial for users of the affected components to assess their security posture and apply necessary mitigations.

Affected Version(s)

Meona Client 2024.10

Meona Client 2025.04 < 2025.04.24

Meona Client 2026.03 < 2026.03.02

References

https://mesalvo.com/en/vdp/advisories/msa-2026-005.pdf
vendor-advisory

CVSS V3.1

Score:
2.3
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.