Use-After-Free Vulnerability in FreeRDP USB Redirection Channel
CVE-2026-121408

6MEDIUM

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
3 November 2026

What is CVE-2026-121408?

FreeRDP prior to version 3.32.2 is susceptible to a use-after-free vulnerability in the USB redirection channel. This issue arises because the FindChannelById function returns a channel pointer without a reference count, allowing for potential exploitation. An attacker can exploit this flaw by sending a control-channel CLOSE_REQUEST to the client while it is in the process of announcing a USB device, resulting in a crash of the FreeRDP client when it attempts to access the freed channel. This vulnerability poses serious security risks, especially in environments using remote desktop services.

Affected Version(s)

FreeRDP 0 < 3.32.2

FreeRDP 3.32.2

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GH...
vendor-advisory
https://www.vulncheck.com/advisories/freerdp-before-3.32....
third-party-advisory

CVSS V4

Score:
6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Kushalkhemka
mayank-jangid-moon
opensec-intelligence
.