What is CVE-2026-0856?

CVE-2026-0856 is a high-severity vulnerability in Mesalvo Meona Client Launcher Component, classified under Improper Access Control. CVSS score: 7.8/10. Published 2026-05-20.

How severe is CVE-2026-0856?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Mesalvo Meona Client Launcher Component

CVE-2026-0856

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 19.06.202…

EPSS: 0.000 (2.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mesalvo Meona Client Launcher Component — versions 0
Mesalvo Meona Server Component — versions 0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

a6d3dc9e-0591-4a13-bce7-0f5b31ff6158 (third-party-advisory)

Frequently asked questions

What is CVE-2026-0856?: CVE-2026-0856 is a high-severity vulnerability in Mesalvo Meona Client Launcher Component, classified under Improper Access Control. CVSS score: 7.8/10. Published 2026-05-20.
How severe is CVE-2026-0856?: High severity. CVSS v3 base score is 7.8 out of 10.