CVE-2026-24683 Details
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. ainput_send_input_event caches channel_callback in a local variable and later uses it without synchronization; a concurrent channel close can free or reinitialize the callback, leading to a use after free. Prior to 3.22.0, This vulnerability is fixed in 3.22.0.
A heap use-after-free vulnerability has been identified in FreeRDP versions through 3.21.0, specifically within the ainput channel handling. The issue arises because the ainput_send_input_event function caches the channel callback in a local variable and uses it without proper synchronization. This lack of synchronization can lead to a race condition where a concurrent channel close operation frees or reinitializes the callback, creating a use-after-free scenario. When exploited, this vulnerability can cause a crash and potentially allow for arbitrary code execution, depending on the behavior of the memory allocator and the layout of the heap.
Users can upgrade to FreeRDP version 3.22.0 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Feb 10, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| freerdp freerdp | < 3.22.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Feb 10, 2026 | Initial Analysis | [email protected] |
| Feb 9, 2026 | New CVE Received | [email protected] |