CVEvulnerability
CVE-2026-63117
6.5 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-08-19
- Last modified
- 2026-10-26
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-369
Description
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.
Affected configurations
• freerdp freerdp (< 3.28.0)
Related
Weakness · CWE (1)
- CWE-369 Divide By Zero weakness
References
- https://github.com/FreeRDP/FreeRDP/commit/b78fc0b138fe8f08a8b102e193ffb32986f4449a Patch
- https://github.com/FreeRDP/FreeRDP/pull/12980 Issue Tracking, Patch
- https://github.com/FreeRDP/FreeRDP/releases/tag/3.28.0 Release Notes
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v64m-xxfw-hrv6 Vendor Advisory