CVE-2023-39350

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. This issue affects Clients only. Integer underflow leading to DOS (e.g. abort due to `WINPR_ASSERT` with default compilation flags). When an insufficient blockLen is provided, and proper length validation is not performed, an Integer Underflow occurs, leading to a Denial of Service (DOS) vulnerability. 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

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1

5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

1.64% chance of exploitation in the next 30 days, 75th percentile

Published

2023-08-31

Updated

2025-11-03

Proof-of-concept exploits (1)

• FreeRDP/FreeRDP/security/advisories/GHSA-rrrv-3w42-pffh

References

• CVE Record
• NVD entry

Related

• CVE-2023-39351
• CVE-2023-39352
• CVE-2023-39353
• CVE-2023-39354
• CVE-2023-39355
• CVE-2023-39356