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›vulnerability›CVE-2026-63633
Name
CVE-2026-63633
Source
NVD ( link)Debian ( link)
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0, freerdp_dsp_decode_opus in libfreerdp/codec/dsp.c calls Stream_EnsureRemainingCapacity on context->common.buffer even though opus_decode writes decoded PCM into the caller-supplied out stream. A malicious RDP server that negotiates WAVE_FORMAT_OPUS with a client built with WITH_OPUS enabled and WITH_DSP_FFMPEG disabled can make libopus write a large decoded frame beyond the 4096-byte StreamPool_Take destination used by channels/rdpsnd/client/rdpsnd_main.c. This can corrupt the client heap, crash the client, and may permit code execution. This issue is fixed in version 3.28.0.
Published Date
Updated Date
Workaround
-

Analysis#


Affected Component
Analysis
freerdp
Exploitable
freerdp3
Exploitable

Vulnerability Ratings#


7.7
CVSSv4
9.8
CVSSv31
NaN
other

Others affected components#


Name
Project
Project Version
Version
Status
buildroot
2025.02.x
2.11.8
Exploitable
buildroot
master
2.11.8
Exploitable
yocto
kirkstone
2.6.1
Exploitable
yocto
master
2.11.8
Exploitable
yocto
master
3.32.1
Not Affected