CVE-2022-23493 Out of Bound Read in xrdp

What is CVE-2022-23493?

CVE-2022-23493 is a critical memory corruption vulnerability in Debian Debian Linux, published on 9 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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 Read in xrdp_mm_trans_process_drdynvc_channel_close() function. There are no known workarounds for this issue. Users are advised to upgrade.

Weakness: CWE-125

Which versions are affected by CVE-2022-23493?

It affects 2 products.

Products include Debian Debian Linux, Neutrinolabs Xrdp.

How do I fix CVE-2022-23493?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-23493 being exploited?

There is no known exploitation of CVE-2022-23493 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2022-23493, GHSA-59wp-3wq6-jh5v, UBUNTU-CVE-2022-23493.