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vulnerabilityCVE-2026-33977
Name
CVE-2026-33977
Source
NVD ( link)Debian ( link)
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.
Published Date
Updated Date
Workaround
-

Analysis#


Affected Component
Analysis
freerdp
Exploitable

Vulnerability Ratings#


6.9
CVSSv4
6.5
CVSSv31
NaN
other

Others affected components#


Name
Project
Project Version
Version
Status
buildroot
2025.02.x
2.11.8
Exploitable
yocto
kirkstone
2.6.1
Exploitable
yocto
master
2.11.8
Exploitable
yocto
master
3.26.0
Not Affected
yocto
scarthgap
2.11.8
Exploitable
yocto
scarthgap
3.4.0
Exploitable