CVE-2026-0856 PUBLISHED

Assigner: ENISA
Reserved: 12.01.2026 Published: 20.05.2026 Updated: 20.05.2026

Improper Access Control vulnerability in Mesalvo Meona Client Launcher Component, Mesalvo Meona Server Component enables a normal user gaining access to the admin panel. This issue affects Meona Client Launcher Component: through 19.06.2020 15:11:49; Meona Server Component: through 2025.04 5+323020.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 7.8

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Mesalvo
Product	Meona Client Launcher Component
Versions	Default: unaffected affected from 0 to 19.06.2020 15:11:49 (incl.)

Vendor	Mesalvo
Product	Meona Server Component
Versions	Default: unaffected affected from 0 to 2025.04 5+323020 (incl.)

References

https://seccore.at/blog/cves-meona/

Problem Types

CWE-284: Improper Access Control CWE