EDK II — Cyber Threats, Attacks & Incidents

Threat entity extracted from intelligence sources

Frequency
1
occurrences
First Seen
November 26, 2025
Last Seen
November 26, 2025

EDK II is the EFI Development Kit II, an open-source platform used to build UEFI firmware for computing devices.

Overview

EDK II is the EFI Development Kit II, an open-source platform used to build UEFI firmware for computing devices. The Ubuntu 22.04 LTS advisory USN-7894 signals critical Denial of Service flaws in EDK II that could crash or destabilize systems, underscoring firmware-level risk. These flaws are significant because they affect boot-time and runtime firmware components, necessitating prompt patching to maintain system availability.

Related Threat Clusters

  • Critical EDK II Vulnerabilities Affect Ubuntu 22.04 and 24.04 LTS

    EDK II in Ubuntu 22.04 LTS and 24.04 LTS has critical vulnerabilities, including a predictable TCP Initial Sequence Number that could allow unauthorized access. Additionally, improper handling of S3 sleep could lead to…

    3 articles · Updated November 26, 2025

Recent Intelligence Reports

  • Ubuntu 22.04 LTS EDK II Critical Denial of Service Flaws USN-7894 — Linuxsecurity · November 26, 2025

Related Entities

Denial of Service Ubuntu CVE-2021-3712 CVE-2022-0778 CVE-2022-4304 CVE-2022-4450 CVE-2023-0215 CVE-2023-0286 CVE-2023-0464 CVE-2023-0465 CVE-2023-0466 CVE-2023-2650

CVSS v3.1 Breakdown