CVE-2023-40574: Freerdp

Critical severity, CVSS 9.8. EPSS: 1.2% 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 `writePixelBGRX` function. This issue is likely down to incorrect calculations of the `nHeight` and `srcStep` variables. This issue has been addressed in version 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.

Affected products

• Freerdp Freerdp: version 3.0.0 only

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