CVE-2023-40188

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.

CVSS v3.1

9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CVSS v3.1

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS

1.46% chance of exploitation in the next 30 days, 72th percentile

Published

2023-08-31

Updated

2025-11-03

Proof-of-concept exploits (1)

• FreeRDP/FreeRDP/security/advisories/GHSA-9w28-wwj5-p4xq

References

• CVE Record
• NVD entry

Related

• CVE-2023-39350
• CVE-2023-39351
• CVE-2023-39352
• CVE-2023-39353
• CVE-2023-39354
• CVE-2023-39355