CVE-2026-63117

medium Red Hat
CVSS v3 Base Score
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: August 19, 2026 (18 days ago)
Last Modified: August 19, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. An authenticated Remote Desktop Protocol (RDP) client can trigger a denial of service by sending a specially crafted DVI ADPCM frame. By advertising specific nBlockAlign and nChannels values, a division-by-zero error occurs in the rdpsnd_server_select_format function. This vulnerability leads to the termination of the server-side rdpsnd channel process, causing a denial of service.

CWE

CWE-369

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com 🔗 github.com