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CVE Database›CVE-2020-4033

CVE-2020-4033

freerdp: out-of-bounds read in RLEDECOMPRESS

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Severity

Low

Red Hat Product Security

6.5

CVSS 3.1

Review impact separately from score.

Published · June 22, 2020

Updated · February 24, 2026

Description

In FreeRDP before version 2.1.2, there is an out of bounds read in RLEDECOMPRESS. All FreeRDP based clients with sessions with color depth < 32 are affected. This is fixed in version 2.1.2.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Set the color depth to 32 with the client commandline option: /bpp:32.

CVSS / CWE

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

CWE-125 · Out-of-bounds Read