CVE-2026-63633
freerdp: FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-63633 is fixed in 34 products on 1 platform, first by freerdp3-shadow-x11 3.30.0+dfsg-0ubuntu0.24.04.1, released July 23, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
9.8
important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0062
49th percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| freerdp · RHEL 10 | 3.10.3-3.el10_0.16 | RHSA-2026:68706 | Sep 2, 2026 |
| freerdp · almalinux 10 | 2:3.10.3-12.el10_2.10 | ALSA-2026:61378 | Aug 31, 2026 |
| freerdp · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp · ol 10 | 2:3.10.3-12.el10_2.10 | ELSA-2026-61378-0 | Sep 1, 2026 |
| freerdp · rocky 10 | 2:3.10.3-12.el10_2.10 | RLSA-2026:61378 | Sep 1, 2026 |
| freerdp-debuginfo · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-debugsource · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-devel · almalinux 10 | 2:3.10.3-12.el10_2.10 | ALSA-2026:61378 | Aug 31, 2026 |
| freerdp-devel · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-devel · ol 10 | 2:3.10.3-12.el10_2.10 | ELSA-2026-61378-0 | Sep 1, 2026 |
| freerdp-libs · almalinux 10 | 2:3.10.3-12.el10_2.10 | ALSA-2026:61378 | Aug 31, 2026 |
| freerdp-libs · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-libs · ol 10 | 2:3.10.3-12.el10_2.10 | ELSA-2026-61378-0 | Sep 1, 2026 |
| freerdp-libs-debuginfo · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-proxy · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | freerdp-proxy 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| freerdp-proxy-modules · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | freerdp-proxy-modules 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| freerdp-sdl · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | freerdp-sdl 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| freerdp-server · almalinux 10 | 2:3.10.3-12.el10_2.10 | ALSA-2026:61378 | Aug 31, 2026 |
| freerdp-server · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-server · ol 10 | 2:3.10.3-12.el10_2.10 | ELSA-2026-61378-0 | Sep 1, 2026 |
| freerdp-server-debuginfo · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-shadow-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | freerdp-shadow-x11 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| freerdp-wayland · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | freerdp-wayland 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| freerdp-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | freerdp-x11 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| freerdp3 · Debian 14 | 3.28.0+dfsg-1 | DEBIAN-CVE-2026-63633 | Aug 20, 2026 |
| freerdp3-proxy · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | freerdp3-proxy 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| freerdp3-proxy-modules · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | freerdp3-proxy-modules 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| freerdp3-sdl · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | freerdp3-sdl 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| freerdp3-shadow-x11 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | freerdp3-shadow-x11 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| freerdp3-shadow-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | freerdp3-shadow-x11 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| freerdp3-wayland · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | freerdp3-wayland 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| freerdp3-wayland · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | freerdp3-wayland 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| freerdp3-x11 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | freerdp3-x11 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| freerdp3-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | freerdp3-x11 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| libfreerdp-client3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-client3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libfreerdp-client3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-client3-3 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| libfreerdp-server-proxy3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-server-proxy3-3 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| libfreerdp-server3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-server3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libfreerdp-server3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-server3-3 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| libfreerdp-shadow-subsystem3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-shadow-subsystem3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libfreerdp-shadow-subsystem3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-shadow-subsystem3-3 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| libfreerdp-shadow3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-shadow3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libfreerdp-shadow3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-shadow3-3 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| libfreerdp3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libfreerdp3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libfreerdp3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | libfreerdp3-3 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| libwinpr · almalinux 10 | 2:3.10.3-12.el10_2.10 | ALSA-2026:61378 | Aug 31, 2026 |
| libwinpr · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| libwinpr · ol 10 | 2:3.10.3-12.el10_2.10 | ELSA-2026-61378-0 | Sep 1, 2026 |
| libwinpr-debuginfo · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| libwinpr-devel · almalinux 10 | 2:3.10.3-12.el10_2.10 | ALSA-2026:61378 | Aug 31, 2026 |
| libwinpr-devel · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| libwinpr-devel · ol 10 | 2:3.10.3-12.el10_2.10 | ELSA-2026-61378-0 | Sep 1, 2026 |
| libwinpr-tools3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libwinpr-tools3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libwinpr-tools3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | libwinpr-tools3-3 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| libwinpr3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libwinpr3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libwinpr3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | libwinpr3-3 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| winpr-utils · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | winpr-utils 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
| winpr3-utils · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | winpr3-utils 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| winpr3-utils · Ubuntu 26.04.1 LTS (resolute) | 3.30.0+dfsg-0ubuntu0.26.04.1 | winpr3-utils 3.30.0+dfsg-0ubuntu0.26.04.1 | Nov 7, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.