CVE-2026-24678

Modified Modified - Updated After Analysis

Use-After-Free in FreeRDP ecam_channel_write Causes Crash

Publication date: 2026-02-09

Last updated on: 2026-06-30

Assigner: GitHub, Inc.

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, A capture thread sends sample responses using a freed channel callback after a device channel close, leading to a use after free in ecam_channel_write. This vulnerability is fixed in 3.22.0.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-02-09

Last Modified

2026-06-30

Generated

2026-07-06

AI Q&A

2026-02-09

EPSS Evaluated

2026-07-05

NVD

CVE-2026-24678

Affected Vendors & Products

Vendor	Product	Version / Range
freerdp	freerdp	to 3.22.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-825	The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This vulnerability exists in FreeRDP, a free implementation of the Remote Desktop Protocol. Before version 3.22.0, a capture thread sends sample responses using a freed channel callback after a device channel has been closed. This leads to a use-after-free condition in the function ecam_channel_write.

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

This issue was fixed in FreeRDP version 3.22.0.

Impact Analysis

The vulnerability can lead to a use-after-free condition, which may cause the application to crash or behave unpredictably.

Because the vulnerability involves memory misuse, it could potentially be exploited by an attacker to execute arbitrary code or cause denial of service.

The CVSS v4.0 base score of 8.7 indicates a high severity, meaning the impact on confidentiality, integrity, or availability could be significant if exploited.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

The vulnerability in FreeRDP is fixed in version 3.22.0. To mitigate this vulnerability, you should upgrade your FreeRDP installation to version 3.22.0 or later.

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