CVE-2026-91951

MediumCVSS 6.5/10Last modified Sep 24, 2026

Description

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-617

Affected software

No affected versions have been published.

Timeline

Published
Sep 15, 2026
Last modified
Sep 24, 2026
NVD status
Analyzed

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CVE-2026-91951: Medium severity, CVSS 6.5 | Vulnix