PoC Index85,100 CVEs with PoCs

CVE-2023-39356

Missing offset validation leading to Out-of-Bounds Read in FreeRDP

CRITICAL 9.1EPSS 1.8%

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions a missing offset validation may lead to an Out Of Bound Read in the function `gdi_multi_opaque_rect`. In particular there is no code to validate if the value `multi_opaque_rect->numRectangles` is less than 45. Looping through `multi_opaque_rect->`numRectangles without proper boundary checks can lead to Out-of-Bounds Read errors which will likely lead to a crash. 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
FreeRDP
CVSS v3.1 NVD
9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS v3.1 GITHUB
5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS
1.81% chance of exploitation in the next 30 days, 78th percentile
Published
2023-08-31
Updated
2025-11-03

Proof-of-concept exploits (1)

Security advisories

References