Use After Free Vulnerability in FreeRDP Affects Remote Desktop Protocol Implementations

CVE-2026-23883

What is CVE-2026-23883?

A vulnerability in FreeRDP, an open-source Remote Desktop Protocol implementation, allows for a use-after-free scenario due to improper memory management. Specifically, the xf_Pointer_New function incorrectly frees memory on failure, leading to a double-free situation when pointer_free is called. This issue can be exploited by a malicious server to trigger a client-side crash, potentially resulting in denial of service (DoS) and even risking heap corruption, which could allow for code execution depending on the specifics of the environment. Users are advised to upgrade to version 3.21.0 or later, which addresses this vulnerability.

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