Intel UEFI Reference BIOS: Schwachstelle ermöglicht Offenlegung von Informationen
WID-SEC-2026-2757 · first 12.08.2026 · updated 01.10.2026 · CVSS 6,0
What it is about
Die Firmware ist eine in die Geräte fest eingebettete Software, die dort grundlegende Funktionen leistet. Der Prozessor ist das zentrale Rechenwerk eines Computers. Ein lokaler Angreifer kann eine Schwachstelle in Intel UEFI Reference BIOS ausnutzen, um Informationen offenzulegen.
Under what conditions?
Only with access to the device or an account on it. Often the second step after a phishing email.
What can happen in the worst case
An attacker could use the vulnerability to
- Informationen offenzulegen
Am I affected?
Affected according to the BSI:
- Dell PowerEdge Server
- Dell PowerScale OneFS
- Dell Computer
- Oracle Linux
- Intel Firmware UEFI Reference BIOS
- Intel Prozessor UEFI Firmware
- Dell BIOS Precision Rack
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)
- Intel Security Advisory vom 2026-08-11 www.intel.com
- Dell Security Advisory DSA-2026-212 vom 2026-08-14 www.dell.com
- Dell Security Advisory DSA-2026-351 vom 2026-08-18 www.dell.com
- Dell Security Advisory DSA-2026-355 vom 2026-09-02 www.dell.com
- Oracle Linux Security Advisory ELSA-2026-500239 vom 2026-09-04 linux.oracle.com
- Dell Security Advisory DSA-2026-407 vom 2026-10-01 www.dell.com
CVE: CVE-2026-20712
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.