CVE-2026-0856
Mesalvo Meona Client/Server Unauthenticated Admin Panel Access
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.
INFO
Published Date :
May 20, 2026, 11:16 a.m.
Last Modified :
July 24, 2026, 10:10 a.m.
Remotely Exploit :
No
Source :
a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
Affected Products
The following products are affected by CVE-2026-0856
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | a6d3dc9e-0591-4a13-bce7-0f5b31ff6158 |
Solution
- Apply vendor patches to client and server components.
- Implement strict access controls for the admin panel.
- Review and enforce role-based access permissions.
- Limit administrative privileges to necessary users.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-0856.
| URL | Resource |
|---|---|
| https://seccore.at/blog/cves-meona/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-0856 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-0856
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-0856 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-0856 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Added Translation Title: componentes Meona Client Launcher y Server de Mesalvo, Description: Vulnerabilidad de control de acceso inadecuado en el Componente Lanzador de Cliente Mesalvo Meona, Componente de Servidor Mesalvo Meona permite a un usuario normal obtener acceso al panel de administración. Este problema afecta al Componente Lanzador de Cliente Meona: hasta 19.06.2020 15:11:49; Componente de Servidor Meona: hasta 2025.04 5+323020. -
CVE Modified by a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Mesalvo', 'product': 'Meona Client Launcher Component', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'custom', 'lessThanOrEqual': '19.06.2020 15:11:49'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mesalvo', 'product': 'Meona Server Component', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'custom', 'lessThanOrEqual': '2025.04 5+323020'}], 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-0856', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-05-20T12:27:02.745163Z'} -
New CVE Received by a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
May. 20, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-284 Added Reference https://seccore.at/blog/cves-meona/