CVE-2023-40567: Debian Linux

Critical severity, CVSS 9.8. 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 Write in the `clear_decompress_bands_data` function in which there is no offset validation. Abuse of this vulnerability may lead to an out of bounds write. 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 vulnerability.

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.