# CVE-2025-2296: Un-verified kernel bypass Secure Boot mechanism in direct boot mode

CVE-2025-2296 is fixed in 5 products on 1 platform, first by RHSA-2026:18465, released December 9, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-2296
- Priority: High
- CVSS: 8.2 (Important)
- EPSS: 0.0077
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 9, 2025
- Weakness: Improper Input Validation
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-2296

## Description

EDK2 contains a vulnerability in BIOS where an attacker may cause “ Improper Input Validation” by local access. Successful exploitation of this vulnerability could alter control flow in unexpected ways, potentially allowing arbitrary command execution and impacting Confidentiality, Integrity, and Availability.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | edk2 Debian 13.5 (trixie) | 2025.02-1 | [DEBIAN-CVE-2025-2296](https://patchblox.com/security/data/fix/linux/debian-cve-2025-2296.md) | Dec 9, 2025 |
| Linux | edk2 Debian 14 | 2025.02-1 | [DEBIAN-CVE-2025-2296](https://patchblox.com/security/data/fix/linux/debian-cve-2025-2296.md) | Dec 9, 2025 |
| Linux | edk2 RHEL 10 | 20251114-5.el10_2 | [RHSA-2026:18465](https://patchblox.com/security/data/fix/linux/rhsa-2026-18465.md) | Dec 9, 2025 |
| Linux | edk2 rocky 10 | 0:20251114-5.el10 | [RLSA-2026:18465](https://patchblox.com/security/data/fix/linux/rlsa-2026-18465.md) | May 29, 2026 |
| Linux | edk2-aarch64 almalinux 10 | 20251114-5.el10_2 | [ALSA-2026:18465](https://patchblox.com/security/data/fix/linux/alsa-2026-18465.md) | May 19, 2026 |
| Linux | edk2-aarch64 ol 10 | 0:20251114-5.0.1.el10_2 | [ELSA-2026-18465](https://patchblox.com/security/data/fix/linux/elsa-2026-18465.md) | Jul 8, 2026 |
| Linux | edk2-ovmf almalinux 10 | 20251114-5.el10_2 | [ALSA-2026:18465](https://patchblox.com/security/data/fix/linux/alsa-2026-18465.md) | May 19, 2026 |
| Linux | edk2-ovmf ol 10 | 0:20251114-5.0.1.el10_2 | [ELSA-2026-18465](https://patchblox.com/security/data/fix/linux/elsa-2026-18465.md) | Jul 8, 2026 |
| Linux | edk2-tools almalinux 10 | 20251114-5.el10_2 | [ALSA-2026:18465](https://patchblox.com/security/data/fix/linux/alsa-2026-18465.md) | May 19, 2026 |
| Linux | edk2-tools ol 10 | 0:20251114-5.0.1.el10_2 | [ELSA-2026-18465](https://patchblox.com/security/data/fix/linux/elsa-2026-18465.md) | Jul 8, 2026 |
| Linux | edk2-tools-doc almalinux 10 | 20251114-5.el10_2 | [ALSA-2026:18465](https://patchblox.com/security/data/fix/linux/alsa-2026-18465.md) | May 19, 2026 |
| Linux | edk2-tools-doc ol 10 | 0:20251114-5.0.1.el10_2 | [ELSA-2026-18465](https://patchblox.com/security/data/fix/linux/elsa-2026-18465.md) | Jul 8, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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