CVE-2026-44421
Fixed in a distro release EPSS <1%CVSS 8.8
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client by sending crafted RDPGFX PDUs. The bug is in gdi_CacheToSurface: it validates a destination rectangle that is clamped to UINT16_MAX, but then performs the copy using the original cacheEntry->width/height. This can cause a large out-of-bounds heap write and may lead to client crashes or code execution. This bug is reachable from a malicious RDP server, but only when the client has RDPGFX enabled. This vulnerability is fixed in 3.26.0.
Products: FreeRDP, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | freerdp | 2:3.10.3-12.el10_2.6 |
| AlmaLinux 10 | freerdp-devel | 2:3.10.3-12.el10_2.6 |
| AlmaLinux 10 | freerdp-libs | 2:3.10.3-12.el10_2.6 |
| AlmaLinux 10 | freerdp-server | 2:3.10.3-12.el10_2.6 |
| AlmaLinux 10 | libwinpr | 2:3.10.3-12.el10_2.6 |
| AlmaLinux 10 | libwinpr-devel | 2:3.10.3-12.el10_2.6 |
| Amazon Linux 2 | freerdp | 2:2.11.7-1.amzn2.0.12 |
| Amazon Linux 2 | freerdp-devel | 2:2.11.7-1.amzn2.0.12 |
| Amazon Linux 2 | freerdp-libs | 2:2.11.7-1.amzn2.0.12 |
| Amazon Linux 2 | libwinpr | 2:2.11.7-1.amzn2.0.12 |
| Amazon Linux 2 | libwinpr-devel | 2:2.11.7-1.amzn2.0.12 |
| Amazon Linux 2023 | freerdp | 2:3.6.3-1.amzn2023.0.12 |
| Amazon Linux 2023 | freerdp-devel | 2:3.6.3-1.amzn2023.0.12 |
| Amazon Linux 2023 | freerdp-libs | 2:3.6.3-1.amzn2023.0.12 |
| Amazon Linux 2023 | freerdp-server | 2:3.6.3-1.amzn2023.0.12 |
| Amazon Linux 2023 | libwinpr | 2:3.6.3-1.amzn2023.0.12 |
| Amazon Linux 2023 | libwinpr-devel | 2:3.6.3-1.amzn2023.0.12 |
| Debian 12 | freerdp2 | no fix |
| Debian 13 | freerdp3 | no fix |
| Debian 14 | freerdp3 | 3.26.0+dfsg-1 |
| Red Hat Enterprise Linux 10.2 | freerdp | 2:3.10.3-12.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | freerdp-debuginfo | 2:3.10.3-12.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | freerdp-debugsource | 2:3.10.3-12.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | freerdp-devel | 2:3.10.3-12.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | freerdp-libs | 2:3.10.3-12.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | freerdp-libs-debuginfo | 2:3.10.3-12.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | freerdp-server | 2:3.10.3-12.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | freerdp-server-debuginfo | 2:3.10.3-12.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | libwinpr | 2:3.10.3-12.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | libwinpr-debuginfo | 2:3.10.3-12.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | libwinpr-devel | 2:3.10.3-12.el10_2.6 |
| Red Hat Enterprise Linux eus 10.0 | freerdp | 2:3.10.3-3.el10_0.9 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-debuginfo | 2:3.10.3-3.el10_0.9 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-debugsource | 2:3.10.3-3.el10_0.9 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-devel | 2:3.10.3-3.el10_0.9 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-libs | 2:3.10.3-3.el10_0.9 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-libs-debuginfo | 2:3.10.3-3.el10_0.9 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-server | 2:3.10.3-3.el10_0.9 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-server-debuginfo | 2:3.10.3-3.el10_0.9 |
| Red Hat Enterprise Linux eus 10.0 | libwinpr | 2:3.10.3-3.el10_0.9 |
| Red Hat Enterprise Linux eus 10.0 | libwinpr-debuginfo | 2:3.10.3-3.el10_0.9 |
| Red Hat Enterprise Linux eus 10.0 | libwinpr-devel | 2:3.10.3-3.el10_0.9 |
| Rocky Linux 10 | freerdp | 2:3.10.3-12.el10_2.6 |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | freerdp | 3.10.3-150700.3.17.1 |
| SUSE Linux Enterprise Server 16.0 | freerdp | 3.26.0-160000.1.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | freerdp | 3.26.0-160000.1.1 |
| SUSE Linux Enterprise Workstation Extension 15 SP7 | freerdp | 3.10.3-150700.3.17.1 |
| Ubuntu 16.04 LTS | freerdp | no fix |
| Ubuntu 18.04 LTS | freerdp | no fix |
| Ubuntu 22.04 LTS | freerdp2 | no fix |
| Ubuntu 24.04 LTS | freerdp3 | 3.30.0+dfsg-0ubuntu0.24.04.1 |
| Ubuntu 25.10 | freerdp3 | no fix |
| Ubuntu 26.04 LTS | freerdp3 | 3.30.0+dfsg-0ubuntu0.26.04.1 |
| Ubuntu Pro 18.04 LTS | freerdp2 | no fix |
| Ubuntu Pro 20.04 LTS | freerdp2 | no fix |
| Ubuntu Pro 24.04 LTS | freerdp2 | no fix |
| openSUSE Leap 16.0 | freerdp | 3.26.0-160000.1.1 |
| openSUSE Tumbleweed | freerdp | 3.26.0-3.1 |