CVE-2023-40188: Debian Linux

Critical severity, CVSS 9.1. EPSS: 1.5% chance of exploitation in the next 30 days.

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Read in the `general_LumaToYUV444` function. This Out-Of-Bounds Read occurs because processing is done on the `in` variable without checking if it contains data of sufficient length. Insufficient data for the `in` variable may cause errors or crashes. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.

Affected products

• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 37 only; version 38 only; version 39 only
• Freerdp Freerdp: before 2.11.0 (fixed in 2.11.0); version 3.0.0 only

Published 2023-08-31. Last modified 2026-06-17.