CVE-2026-0856 (GCVE-0-2026-0856)

Vulnerability from cvelistv5 – Published: 2026-05-20 10:38 – Updated: 2026-05-20 12:27
VLAI
Summary
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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-284 - Improper Access Control
Assigner
References
URL Tags
https://seccore.at/blog/cves-meona/ third-party-advisory
Impacted products
Vendor Product Version
Mesalvo Meona Client Launcher Component Affected: 0 , ≤ 19.06.2020 15:11:49 (custom)
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Mesalvo Meona Server Component Affected: 0 , ≤ 2025.04 5+323020 (custom)
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.