CVE-2026-22853
Fixed in a distro release EPSS <1%CVSS 6.8
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, RDPEAR’s NDR array reader does not perform bounds checking on the on‑wire element count and can write past the heap buffer allocated from hints, causing a heap buffer overflow in ndr_read_uint8Array. This vulnerability is fixed in 3.20.1.
Products: FreeRDP, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, 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 | 2:3.10.3-5.el10_1.2 |
| AlmaLinux 10 | freerdp-devel | 2:3.10.3-5.el10_1.2 |
| AlmaLinux 10 | freerdp-libs | 2:3.10.3-5.el10_1.2 |
| AlmaLinux 10 | freerdp-server | 2:3.10.3-5.el10_1.2 |
| AlmaLinux 10 | libwinpr | 2:3.10.3-5.el10_1.2 |
| AlmaLinux 10 | libwinpr-devel | 2:3.10.3-5.el10_1.2 |
| Chainguard | freerdp-dev | no fix |
| Chainguard | freerdp-libs | no fix |
| Debian 12 | freerdp2 | no fix |
| Debian 13 | freerdp3 | 3.15.0+dfsg-2.1+deb13u1 |
| Debian 14 | freerdp3 | 3.20.2+dfsg-1 |
| Red Hat Enterprise Linux 10.1 | freerdp | 2:3.10.3-5.el10_1.2 |
| Red Hat Enterprise Linux 10.1 | freerdp-debuginfo | 2:3.10.3-5.el10_1.2 |
| Red Hat Enterprise Linux 10.1 | freerdp-debugsource | 2:3.10.3-5.el10_1.2 |
| Red Hat Enterprise Linux 10.1 | freerdp-devel | 2:3.10.3-5.el10_1.2 |
| Red Hat Enterprise Linux 10.1 | freerdp-libs | 2:3.10.3-5.el10_1.2 |
| Red Hat Enterprise Linux 10.1 | freerdp-libs-debuginfo | 2:3.10.3-5.el10_1.2 |
| Red Hat Enterprise Linux 10.1 | freerdp-server | 2:3.10.3-5.el10_1.2 |
| Red Hat Enterprise Linux 10.1 | freerdp-server-debuginfo | 2:3.10.3-5.el10_1.2 |
| Red Hat Enterprise Linux 10.1 | libwinpr | 2:3.10.3-5.el10_1.2 |
| Red Hat Enterprise Linux 10.1 | libwinpr-debuginfo | 2:3.10.3-5.el10_1.2 |
| Red Hat Enterprise Linux 10.1 | libwinpr-devel | 2:3.10.3-5.el10_1.2 |
| Red Hat Enterprise Linux 10.2 | freerdp | 2:3.10.3-12.el10_2.2 |
| Red Hat Enterprise Linux 10.2 | freerdp-debuginfo | 2:3.10.3-12.el10_2.2 |
| Red Hat Enterprise Linux 10.2 | freerdp-debugsource | 2:3.10.3-12.el10_2.2 |
| Red Hat Enterprise Linux 10.2 | freerdp-devel | 2:3.10.3-12.el10_2.2 |
| Red Hat Enterprise Linux 10.2 | freerdp-libs | 2:3.10.3-12.el10_2.2 |
| Red Hat Enterprise Linux 10.2 | freerdp-libs-debuginfo | 2:3.10.3-12.el10_2.2 |
| Red Hat Enterprise Linux 10.2 | freerdp-server | 2:3.10.3-12.el10_2.2 |
| Red Hat Enterprise Linux 10.2 | freerdp-server-debuginfo | 2:3.10.3-12.el10_2.2 |
| Red Hat Enterprise Linux 10.2 | libwinpr | 2:3.10.3-12.el10_2.2 |
| Red Hat Enterprise Linux 10.2 | libwinpr-debuginfo | 2:3.10.3-12.el10_2.2 |
| Red Hat Enterprise Linux 10.2 | libwinpr-devel | 2:3.10.3-12.el10_2.2 |
| Red Hat Enterprise Linux eus 10.0 | freerdp | 2:3.10.3-3.el10_0.2 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-debuginfo | 2:3.10.3-3.el10_0.2 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-debugsource | 2:3.10.3-3.el10_0.2 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-devel | 2:3.10.3-3.el10_0.2 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-libs | 2:3.10.3-3.el10_0.2 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-libs-debuginfo | 2:3.10.3-3.el10_0.2 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-server | 2:3.10.3-3.el10_0.2 |
| Red Hat Enterprise Linux eus 10.0 | freerdp-server-debuginfo | 2:3.10.3-3.el10_0.2 |
| Red Hat Enterprise Linux eus 10.0 | libwinpr | 2:3.10.3-3.el10_0.2 |
| Red Hat Enterprise Linux eus 10.0 | libwinpr-debuginfo | 2:3.10.3-3.el10_0.2 |
| Red Hat Enterprise Linux eus 10.0 | libwinpr-devel | 2:3.10.3-3.el10_0.2 |
| Rocky Linux 10 | freerdp | 2:3.10.3-5.el10_1.2 |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | freerdp | 3.10.3-150700.3.3.1 |
| SUSE Linux Enterprise Workstation Extension 15 SP7 | freerdp | 3.10.3-150700.3.3.1 |
| Ubuntu 24.04 LTS | freerdp3 | 3.5.1+dfsg1-0ubuntu1.4 |
| Ubuntu 25.10 | freerdp3 | 3.16.0+dfsg-2ubuntu0.3 |
| Wolfi | freerdp-dev | no fix |
| Wolfi | freerdp-libs | no fix |
| openSUSE Leap 16.0 | freerdp | 3.22.0-160000.1.1 |
| openSUSE Tumbleweed | freerdp | 3.20.2-1.1 |