๐Ÿ›ก๏ธ CVE-2026-33977
๐ŸŸก CVSS 6.5 โ€” Medium โš ๏ธ Exploit Public CWE-617 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, a malicious RDP server can crash the FreeRDP client by sending audio data in IMA ADPCM format with an invalid initial step index value (>= 89). The unvalidated step index is read directly from the network and used to index into a 89-entry lookup table, triggering a WINPR_ASSERT() failure and process abort via SIGABRT. This affects any FreeRDP client that has audio redirection (RDPSND) enabled, which is the default configuration. This issue has been patched in version 3.24.2.

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE CWE-617
Public Exploit โš ๏ธ Yes
Source NVD
Published 2026-03-30
Updated 2026-06-02
Modified 2026-04-01

Affected Packages

Software From version Fixed in
freerdp โ€” 3.24.2

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