CVE-2026-55827 is a vulnerability in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP). The vulnerability is a heap out-of-bounds write in the RemoteFX decoding functionality, which can lead to remote code execution. This security flaw affects numerous specific versions of FreeRDP as distributed by Red Hat and Ubuntu. Red Hat Product Security has rated this issue as important and has released updated packages for Red Hat Enterprise Linux 10 and related products to remediate the vulnerability. The vulnerability is tracked under CWE-787.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code remotely on a system running a vulnerable version of FreeRDP. This could lead to full system compromise depending on the privileges of the affected process. The severity is rated as high by the source data, reflecting the potential for remote code execution.

Red Hat has released updated FreeRDP packages that fix this vulnerability. Users should apply the security updates provided by Red Hat for Red Hat Enterprise Linux 10 and related products. For detailed update instructions, refer to the Red Hat advisory at https://access.redhat.com/articles/11258. Since this is not a cloud service, remediation requires applying the vendor-supplied patches. Patch status is confirmed by the vendor advisory. No indication of known exploits in the wild has been reported.