Vulnerability Details CVE-2026-91951
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 27.8%
CVSS Severity
CVSS v3 Score 6.5
References