Use After Free Vulnerability in FreeRDP Remote Desktop Protocol Implementation
CVE-2026-24683

8.7HIGH

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
9 February 2026

What is CVE-2026-24683?

The FreeRDP implementation of the Remote Desktop Protocol contains a vulnerability that arises from inadequate synchronization in input event handling. Specifically, the 'ainput_send_input_event' function caches a callback in a local variable and later utilizes it without proper synchronization mechanisms. If a concurrent channel closure occurs, it can lead to the callback being freed or reinitialized, resulting in a use after free condition. This vulnerability was addressed in version 3.22.0, ensuring that input handling is secure and properly synchronized.

Affected Version(s)

FreeRDP < 3.22.0

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/FreeRDP/FreeRDP/commit/d9ca272dce7a776...
x_refsource_MISC

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.