Remote Desktop Protocol Vulnerability in FreeRDP Affects Various Versions
CVE-2026-22859

5.6MEDIUM

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
14 January 2026

What is CVE-2026-22859?

The FreeRDP software, which provides an implementation of the Remote Desktop Protocol, contains a vulnerability related to its URBDRC client. Before version 3.20.1, this client fails to perform adequate bounds checking on MSUSB_INTERFACE_DESCRIPTOR values that are received from the server. This oversight allows these values to be used as indices within the libusb_udev_complete_msconfig_setup function, leading to potential out-of-bounds read vulnerabilities. The issue has been addressed in the release of version 3.20.1.

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Affected Version(s)

FreeRDP < 3.20.1

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GH...
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https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
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CVSS V4

Score:
5.6
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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