CVE-2026-22859
CRITICALFreeRDP < 3.20.1 - Out-of-bounds Read in URBDRC Client
Title source: llmDescription
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, the URBDRC client does not perform bounds checking on server‑supplied MSUSB_INTERFACE_DESCRIPTOR values and uses them as indices in libusb_udev_complete_msconfig_setup, causing an out‑of‑bounds read. This vulnerability is fixed in 3.20.1.
References (2)
Core 2
Core References
Exploit, Vendor Advisory x_refsource_confirm
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-56f5-76qv-2r36
Release Notes x_refsource_misc
https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
Scores
CVSS v3
9.1
EPSS
0.0047
EPSS Percentile
36.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-125
CWE-129
Status
published
Products (1)
freerdp/freerdp
< 3.20.1
Published
Jan 14, 2026
Tracked Since
Feb 18, 2026