CVE-2023-39351

FreeRDP Null Pointer Dereference leading denial of service

HIGH
7.5
CVSS Score
Published: August 31, 2023 at 07:56 PM UTC
Updated: June 17, 2026 at 06:12 AM UTC
3 products affected across 3 vendorsDebian LinuxFedoraFreeRDP

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Severity
HIGH7.5
Exploit prediction
EPSS 2%

Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions of FreeRDP are subject to a Null Pointer Dereference leading a crash in the RemoteFX (rfx) handling. Inside the `rfx_process_message_tileset` function, the program allocates tiles using `rfx_allocate_tiles` for the number of numTiles. If the initialization process of tiles is not completed for various reasons, tiles will have a NULL pointer. Which may be accessed in further processing and would cause a program 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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.11.0v < 3.0.0-beta33.0.0 beta13.0.0 beta2
Affected range stops below 2.11.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.0.0-beta3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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