FreeRDP: Mehrere Schwachstellen
WID-SEC-2026-1933 · first 16.06.2026 · updated 02.10.2026 · CVSS 8,6
What it is about
FreeRDP ist eine freie Implementierung des Remote Desktop Protocol (RDP). Ein Angreifer kann mehrere Schwachstellen in FreeRDP ausnutzen,um nicht näher spezifizierte Auswirkungen zu verursachen, potenziell beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- nicht näher spezifizierte Auswirkungen zu verursachen
- potenziell beliebigen Code auszuführen
- Sicherheitsmaßnahmen zu umgehen
- Daten zu manipulieren
- vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- RESF Rocky Linux
- Open Source FreeRDP <3.27.0
- Oracle Linux
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 3.27.0
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 Release Notes vom 2026-06-15 www.freerdp.com
- GitHub Security Advisory GHSA-5c5v-f78v-h2f6 vom 2026-06-15 github.com
- GitHub Security Advisory GHSA-7rp4-66mc-j9vx vom 2026-06-15 github.com
- GitHub Security Advisory GHSA-9gxm-3mf5-f5cx vom 2026-06-15 github.com
- GitHub Security Advisory GHSA-vx73-w5q6-7jqr vom 2026-06-15 github.com
- GitHub Security Advisory GHSA-vx73-w5q6-7jqr vom 2026-06-15 github.com
- Red Hat Security Advisory RHSA-2026:61378 vom 2026-08-31 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:61379 vom 2026-09-01 errata.build.resf.org
- Rocky Linux Security Advisory RLSA-2026:61378 vom 2026-09-01 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-61379 vom 2026-09-02 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:62571 vom 2026-09-02 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:62571 vom 2026-09-03 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-61378 vom 2026-09-04 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-62571 vom 2026-09-03 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:65855 vom 2026-09-09 access.redhat.com
- Red Hat Security Advisory RHSA-2026:66349 vom 2026-09-10 access.redhat.com
- Red Hat Security Advisory RHSA-2026:66281 vom 2026-09-10 access.redhat.com
- Red Hat Security Advisory RHSA-2026:66282 vom 2026-09-10 access.redhat.com
- Red Hat Security Advisory RHSA-2026:66347 vom 2026-09-10 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-66347 vom 2026-09-10 linux.oracle.com
- Rocky Linux Security Advisory RLSA-2026:66347 vom 2026-09-11 errata.build.resf.org
- Rocky Linux Security Advisory RLSA-2026:66349 vom 2026-09-11 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-66349 vom 2026-09-11 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:68706 vom 2026-09-17 access.redhat.com
- Red Hat Security Advisory RHSA-2026:68707 vom 2026-09-17 access.redhat.com
and 15 more sources in the original advisory
CVE: CVE-2026-55191, CVE-2026-55192, CVE-2026-55193, CVE-2026-55194, CVE-2026-55564, CVE-2026-55648
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.