CVE-2026-22859
CRITICAL
2026-01-14
[email protected]
9.1
CVSS 3.1
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CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Lifecycle Timeline
4
Patch Released
Apr 09, 2026 - 20:30 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 20, 2026 - 18:31 vuln.today
Public exploit code
CVE Published
Jan 14, 2026 - 18:16 nvd
CRITICAL 9.1
Description
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.
Analysis
FreeRDP URBDRC USB redirect client has OOB read when processing server-supplied interface descriptors without bounds checking. Fixed in 3.20.1.
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Remediation
Within 24 hours: Identify all affected systems and apply vendor patches immediately. Monitor vendor channels for patch availability.
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Priority Score
66
Low
Medium
High
Critical
KEV: 0
EPSS: +0.1
CVSS: +46
POC: +20
Vendor Status
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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