Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeRDP | FreeRDP | < 3.20.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | freerdp3 | 3.20.2+dfsg-1 | — |
| Debian 13 | freerdp3 | 3.15.0+dfsg-2.1+deb13u1 | — |
| Debian 12 | freerdp2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | freerdp3 | 3.16.0+dfsg-2ubuntu0.3 | USN-8105-1 |
| Ubuntu 24.04 LTS | freerdp3 | 3.5.1+dfsg1-0ubuntu1.4 | USN-8105-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | freerdp +5 | 2:3.10.3-5.el10_1.2 | RHSA-2026:19033, RHSA-2026:3068 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | freerdp +5 | 2:3.10.3-3.el10_0.2 | RHSA-2026:4121 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | freerdp +5 | 2:3.10.3-5.el10_1.2 | ALSA-2026:3068 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | freerdp | 2:3.10.3-5.el10_1.2 | RLSA-2026:3068 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | freerdp | 3.10.3-150700.3.3.1 | SUSE-SU-2026:0345-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | freerdp | 3.20.2-1.1 | openSUSE-SU-2026:10059-1 |
| openSUSE Leap 16.0 | freerdp | 3.22.0-160000.1.1 | openSUSE-SU-2026:20339-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | freerdp | 3.22.0-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | freerdp +5 | 2:3.10.3-5.el10_1.2 | ELSA-2026-19033, ELSA-2026-3068 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | freerdp-dev +1 | No fix yet | — |
Advisories 12
- ALSA-2026:3068 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- USN-8105-1 freerdp3 vulnerabilities Ubuntu Security Notices (USN) · Oct 27, 2026
- RHSA-2026:19033 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- WID-SEC-2026-0111 FreeRDP: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 28, 2026
- RHSA-2026:4121 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Aug 19, 2026
- RHSA-2026:3068 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Aug 19, 2026
- ELSA-2026-19033 Important: freerdp security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 8, 2026
- openSUSE-SU-2026:20339-1 Security update for freerdp SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2026:10059-1 freerdp-3.20.2-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- RLSA-2026:3068 Important: freerdp security update Rocky Linux Security Advisories · Feb 24, 2026
- ELSA-2026-3068 Important: freerdp security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Feb 23, 2026
- SUSE-SU-2026:0345-1 Security update for freerdp SUSE / openSUSE Security Updates · Feb 4, 2026