bluez: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode mit Administratorrechten
WID-SEC-2026-2984 · first 25.08.2026 · updated 15.10.2026 · CVSS 7,1
What it is about
BlueZ ist ein Protokollstack für den Bluetooth-Funkstandard für Linux. Ein Angreifer in Bluetooth-Reichweite kann eine Schwachstelle in bluez ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen.
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
- beliebigen Programmcode mit Administratorrechten auszuführen
Am I affected?
Affected according to the BSI:
- Fedora Linux
- Ubuntu Linux
- Open Source bluez
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Install the updates provided by the vendor; details in the sources below.
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)
- Bluez GitHub Pull Request #2251 vom 2026-08-24 github.com
- Zero Day Initiative ZDI-26-589 vom 2026-08-24 www.zerodayinitiative.com
- Fedora Security Advisory FEDORA-2026-9E6E8DF67A vom 2026-09-16 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-2026-B181E6352D vom 2026-09-16 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-2026-F1AD071FB6 vom 2026-09-16 bodhi.fedoraproject.org
- Ubuntu Security Notice USN-8908-1 vom 2026-10-09 ubuntu.com
- Ubuntu Security Notice USN-8908-2 vom 2026-10-14 ubuntu.com
CVE: CVE-2026-19774
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.