CVE-2026-91951
MEDIUMCVSS 6.5Description
FreeRDP versions before 3.31.0 contain an out-of-bounds write vulnerability in the urbdrc client channel's urb_send_current_frame_number_result() function. A malicious RDP server can send a crafted 28-byte USB redirection message to trigger a 4-byte write past the allocated 16-byte buffer, causing denial of service when verbose asserts are enabled.
Timeline
Published:September 15th, 2026 4:17 PM
Last modified:September 24th, 2026 12:15 PM
CVSS Scoring
CVSS v3: 6.5 (MEDIUM)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Software
From NVD CPE configuration data
Vendors
freerdp
Products
freerdp
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
Source: NIST NVD · Data may lag official sources by up to one minute