Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-63117

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 43.5%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2026-63117


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