CVE-2026-44420
freerdp3-shadow-x11: FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-44420 is fixed in 34 products on 1 platform, first by RHSA-2026:46393, released May 29, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
8.8
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0456
91st percentile
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP client can trigger a heap-buffer-overflow write in FreeRDP's server-side clipboard (cliprdr) channel by sending a CB_CLIP_CAPS PDU with a too-small capabilitySetLength. This can crash the server process (remote DoS) and may be exploitable for code execution because it corrupts heap memory. This vulnerability is fixed in 3.26.0.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| freerdp · RHEL 10 | 3.10.3-3.el10_0.9 | RHSA-2026:46393 | May 29, 2026 |
| freerdp · almalinux 10 | 2:3.10.3-12.el10_2.6 | ALSA-2026:36203 | Jul 7, 2026 |
| freerdp · amzn 2023 | 2:3.6.3-1.amzn2023.0.12 | ALAS2023-2026-1822 | Jun 8, 2026 |
| freerdp · ol 10 | 2:3.10.3-12.el10_2.6 | ELSA-2026-36203 | Jul 16, 2026 |
| freerdp · opensuse-leap 16.0 | 3.26.0-160000.1.1 | OPENSUSE-SU-2026:21116-1 | Jun 20, 2026 |
| freerdp · rocky 10 | 2:3.10.3-12.el10_2.6 | RLSA-2026:36203 | Jul 8, 2026 |
| freerdp · sles 15.7 | 3.10.3-150700.3.17.1 | SUSE-SU-2026:3562-1 | Aug 10, 2026 |
| freerdp · sles 16.0 | 3.26.0-160000.1.1 | SUSE-SU-2026:22194-1 | Jun 20, 2026 |
| freerdp-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.12 | ALAS2023-2026-1822 | Jun 8, 2026 |
| freerdp-debugsource · amzn 2023 | 2:3.6.3-1.amzn2023.0.12 | ALAS2023-2026-1822 | Jun 8, 2026 |
| freerdp-devel · almalinux 10 | 2:3.10.3-12.el10_2.6 | ALSA-2026:36203 | Jul 7, 2026 |
| freerdp-devel · amzn 2023 | 2:3.6.3-1.amzn2023.0.12 | ALAS2023-2026-1822 | Jun 8, 2026 |
| freerdp-devel · ol 10 | 2:3.10.3-12.el10_2.6 | ELSA-2026-36203 | Jul 16, 2026 |
| freerdp-libs · almalinux 10 | 2:3.10.3-12.el10_2.6 | ALSA-2026:36203 | Jul 7, 2026 |
| freerdp-libs · amzn 2023 | 2:3.6.3-1.amzn2023.0.12 | ALAS2023-2026-1822 | Jun 8, 2026 |
| freerdp-libs · ol 10 | 2:3.10.3-12.el10_2.6 | ELSA-2026-36203 | Jul 16, 2026 |
| freerdp-libs-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.12 | ALAS2023-2026-1822 | Jun 8, 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_2.6 | ALSA-2026:36203 | Jul 7, 2026 |
| freerdp-server · amzn 2023 | 2:3.6.3-1.amzn2023.0.12 | ALAS2023-2026-1822 | Jun 8, 2026 |
| freerdp-server · ol 10 | 2:3.10.3-12.el10_2.6 | ELSA-2026-36203 | Jul 16, 2026 |
| freerdp-server-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.12 | ALAS2023-2026-1822 | Jun 8, 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 | 3.26.0+dfsg-1 | DEBIAN-CVE-2026-44420 | Jun 24, 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_2.6 | ALSA-2026:36203 | Jul 7, 2026 |
| libwinpr · amzn 2023 | 2:3.6.3-1.amzn2023.0.12 | ALAS2023-2026-1822 | Jun 8, 2026 |
| libwinpr · ol 10 | 2:3.10.3-12.el10_2.6 | ELSA-2026-36203 | Jul 16, 2026 |
| libwinpr-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.12 | ALAS2023-2026-1822 | Jun 8, 2026 |
| libwinpr-devel · almalinux 10 | 2:3.10.3-12.el10_2.6 | ALSA-2026:36203 | Jul 7, 2026 |
| libwinpr-devel · amzn 2023 | 2:3.6.3-1.amzn2023.0.12 | ALAS2023-2026-1822 | Jun 8, 2026 |
| libwinpr-devel · ol 10 | 2:3.10.3-12.el10_2.6 | ELSA-2026-36203 | Jul 16, 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 |
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