CVE-2023-40589

FreeRDP Global-Buffer-Overflow in ncrush_decompress

HIGH
7.5
CVSS Score
Published: August 31, 2023 at 06:31 PM UTC
Updated: June 17, 2026 at 06:18 AM UTC
3 products affected across 3 vendorsDebian LinuxFedoraFreeRDP

Using FreeRDP by FreeRDP?

Get instant alerts when new vulnerabilities affect FreeRDP - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions there is a Global-Buffer-Overflow in the ncrush_decompress function. Feeding crafted input into this function can trigger the overflow which has only been shown to cause 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 issue.

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-120

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card