FreeRDP: Mehrere Schwachstellen
WID-SEC-2026-0111 · first 14.01.2026 · updated 29.09.2026 · CVSS 8,6
What it is about
FreeRDP ist eine freie Implementierung des Remote Desktop Protocol (RDP). Ein entfernter Angreifer kann mehrere Schwachstellen in FreeRDP ausnutzen,um möglicherweise einen Denial-of-Service-Zustand zu verursachen, beliebigen Code auszuführen, Daten zu manipulieren oder vertrauliche Informationen offenzulegen.
Under what conditions?
Over the network.
What can happen in the worst case
An attacker could use the vulnerability to
- möglicherweise einen Denial-of-Service-Zustand zu verursachen
- beliebigen Code auszuführen
- Daten zu manipulieren oder vertrauliche Informationen offenzulegen
Am I affected?
Affected according to the BSI:
- Amazon Linux 2
- Red Hat Enterprise Linux
- Fedora Linux
- Ubuntu Linux
- SUSE Linux
- Oracle Linux
- SUSE openSUSE
- RESF Rocky Linux
- Open Source FreeRDP <3.20.2
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source FreeRDP 3.20.2
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- FreeRDP Releasenotes vom 2026-01-13 www.freerdp.com
- PoC CVE-2026-22851 vom 2026-01-13 github.com
- PoC CVE-2026-22858 vom 2026-01-13 github.com
- PoC CVE-2026-22852 vom 2026-01-13 github.com
- PoC CVE-2026-22853 vom 2026-01-13 github.com
- PoC CVE-2026-22854 vom 2026-01-13 github.com
- PoC CVE-2026-22855 vom 2026-01-13 github.com
- PoC CVE-2026-22856 vom 2026-01-13 github.com
- PoC CVE-2026-22857 vom 2026-01-13 github.com
- PoC CVE-2026-22859 vom 2026-01-13 github.com
- openSUSE Security Update OPENSUSE-SU-2026:10059-1 vom 2026-01-18 lists.opensuse.org
- SUSE Security Update SUSE-SU-2026:0345-1 vom 2026-01-30 lists.suse.com
- SUSE Security Update SUSE-SU-2026:0421-1 vom 2026-02-10 lists.suse.com
- SUSE Security Update SUSE-SU-2026:0417-1 vom 2026-02-10 lists.suse.com
- SUSE Security Update SUSE-SU-2026:0449-1 vom 2026-02-11 lists.suse.com
- SUSE Security Update SUSE-SU-2026:0559-1 vom 2026-02-16 lists.suse.com
- Amazon Linux Security Advisory ALAS2-2026-3166 vom 2026-02-19 alas.aws.amazon.com
- Red Hat Security Advisory RHSA-2026:3067 vom 2026-02-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:3068 vom 2026-02-23 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-3068 vom 2026-02-24 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-3067 vom 2026-02-24 linux.oracle.com
- Rocky Linux Security Advisory RLSA-2026:3067 vom 2026-02-24 errata.build.resf.org
- Rocky Linux Security Advisory RLSA-2026:3068 vom 2026-02-24 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:3334 vom 2026-02-25 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-3334 vom 2026-02-26 linux.oracle.com
and 45 more sources in the original advisory
CVE: CVE-2026-22851, CVE-2026-22852, CVE-2026-22853, CVE-2026-22854, CVE-2026-22855, CVE-2026-22856, CVE-2026-22857, CVE-2026-22858, CVE-2026-22859
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.