CVE-2026-24681
Analyzed Analyzed - Analysis Complete
Use-After-Free Vulnerability in FreeRDP URBDRC Channel Completion

Publication date: 2026-02-09

Last updated on: 2026-02-10

Assigner: GitHub, Inc.

Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, aAsynchronous bulk transfer completions can use a freed channel callback after URBDRC channel close, leading to a use after free in urb_write_completion. This vulnerability is fixed in 3.22.0.
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Meta Information
Published
2026-02-09
Last Modified
2026-02-10
Generated
2026-06-16
AI Q&A
2026-02-09
EPSS Evaluated
2026-06-15
NVD
CVE-2026-24681
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
freerdp freerdp to 3.22.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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Executive Summary

This vulnerability exists in FreeRDP, a free implementation of the Remote Desktop Protocol. Before version 3.22.0, asynchronous bulk transfer completions could use a freed channel callback after the URBDRC channel was closed. This leads to a use-after-free condition in the function urb_write_completion.

A use-after-free vulnerability occurs when a program continues to use memory after it has been freed, which can lead to undefined behavior, crashes, or potential exploitation.

Impact Analysis

The use-after-free vulnerability in FreeRDP can lead to serious security issues such as application crashes or potentially allow an attacker to execute arbitrary code or cause denial of service.

Given the CVSS v4.0 base score of 8.7, this vulnerability is considered high severity and can impact systems using vulnerable versions of FreeRDP by compromising their stability and security.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, update FreeRDP to version 3.22.0 or later, where the use after free issue in urb_write_completion has been fixed.

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