CVE-2023-40567

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.

CVSS v3.1

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

CVSS v3.1

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

EPSS

1.50% chance of exploitation in the next 30 days, 73th percentile

Published

2023-08-31

Updated

2025-11-03

Proof-of-concept exploits (1)

• FreeRDP/FreeRDP/security/advisories/GHSA-2w9f-8wg4-8jfp

References

• CVE Record
• NVD entry

Related

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