xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a Out of Bound Write in xrdp_mm_trans_process_drdynvc_channel_open() function. There are no known workarounds for this issue. Users are advised to upgrade.
https://www.debian.org/security/2023/dsa-5502
https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-2f49-wwpm-78pj