Is CVE-2026-0856 actively exploited?

No active exploitation of CVE-2026-0856 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-0856 be exploited remotely?

No. CVE-2026-0856 requires local access to exploit.

What is the CVSS score of CVE-2026-0856?

CVE-2026-0856 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2026-0856

CWE-284Published: May 20, 2026· Updated: May 20, 2026

7.8

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.8th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-0856 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.