CVE-2026-63117

{"id": "CVE-2026-63117", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-63117", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-19T18:46:51.410512Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "FreeRDP", "product": "FreeRDP", "versions": [{"status": "affected", "version": "< 3.28.0"}]}]}], "published": "2026-08-19T18:17:08.430", "references": [{"url": "https://github.com/FreeRDP/FreeRDP/commit/b78fc0b138fe8f08a8b102e193ffb32986f4449a", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/FreeRDP/FreeRDP/pull/12980", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.28.0", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v64m-xxfw-hrv6", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-369"}]}], "descriptions": [{"lang": "en", "value": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0, an authenticated RDP client can advertise DVI ADPCM with nBlockAlign equal to 8 and nChannels equal to 2 to make the `bs` calculation in rdpsnd_server_select_format in channels/rdpsnd/server/rdpsnd_main.c equal zero. The subsequent out_frames modulo `bs` operation raises SIGFPE and terminates the server-side rdpsnd channel process. This vulnerability fixed in 3.28.0."}, {"lang": "es", "value": "FreeRDP es una implementaci\u00f3n gratuita del Protocolo de Escritorio Remoto. Antes de 3.28.0, un cliente RDP autenticado puede anunciar DVI ADPCM con nBlockAlign igual a 8 y nChannels igual a 2 para hacer que el c\u00e1lculo de \u2019bs\u2019 en rdpsnd_server_select_format en channels/rdpsnd/server/rdpsnd_main.c sea igual a cero. La operaci\u00f3n subsiguiente de out_frames m\u00f3dulo \u2019bs\u2019 genera SIGFPE y termina el proceso del canal rdpsnd del lado del servidor. Esta vulnerabilidad corregida en 3.28.0."}], "lastModified": "2026-10-26T11:10:00.157", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A8B55819-E57A-4BF4-87DF-357FBF92006F", "versionEndExcluding": "3.28.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}