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On managed devices with application control, as recommended in Mesalvo's hardening guidance (MSA-2026-001), this requires local administrator privileges on the device. Mesalvo is not aware of any exploitation outside the reported security test.\nThis issue affects MEONA Client and MEONA Server in versions 2024.10, 2025.04 and 2026.03. Mitigations are available with MEONA 2025.04.24 and 2026.03.02 (planned Q4 2026); see Mesalvo Security Advisory MSA-2026-001.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Improper Access Control vulnerability in Mesalvo MEONA (MEONA Client and MEONA Server) allows an authenticated MEONA user to access administrative functions of the MEONA Client (admin panel). The MEONA Server does not independently verify the role asserted by the MEONA Client. 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Operators should enforce application control on MEONA workstations so that only Mesalvo-signed binaries execute, withhold local administrator rights from clinical users, provision MEONA users through the hospital's central identity and access management, and keep the MEONA network zone segmented without Internet exposure. Details: Mesalvo Security Advisory MSA-2026-001.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "MEONA 2025.04.24 and 2026.03.02 (Q4 2026) introduce code signing of all MEONA Client executables and assemblies and integrity verification of the client assemblies at start-up. Operators should enforce application control on MEONA workstations so that only Mesalvo-signed binaries execute, withhold local administrator rights from clinical users, provision MEONA users through the hospital's central identity and access management, and keep the MEONA network zone segmented without Internet exposure. 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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,19.06.2020 15:11:49]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Meona Client Launcher Component", "source": "cna", "vendor": "Mesalvo"}, "product": "meona_client_launcher_component", "vendor": "mesalvo"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,2025.04 5+323020]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Meona Server Component", "source": "cna", "vendor": "Mesalvo"}, "product": "meona_server_component", "vendor": "mesalvo"}], "created": "2026-05-20T12:30:16.072112+00:00", "title": "Improper Access Control Enables Normal Users to Access Admin Panel", "updated": "2026-05-21T08:19:23.497434+00:00", "vendors": ["mesalvo", "mesalvo$PRODUCT$meona_client_launcher_component", "mesalvo$PRODUCT$meona_server_component"]}