CVE-2025-45512

Publication date 5 August 2025

Last updated 11 February 2026

Ubuntu priority

Cvss 3 Severity Score

Description

A lack of signature verification in the bootloader of DENX Software Engineering Das U-Boot (U-Boot) v1.1.3 allows attackers to install crafted firmware files, leading to arbitrary code execution.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
u-boot	25.10 questing	Vulnerable, fix deferred
	25.04 plucky	Ignored end of life, was needs-triage
	24.04 LTS noble	Vulnerable, fix deferred
	22.04 LTS jammy	Vulnerable, fix deferred
	20.04 LTS focal	Vulnerable, fix deferred
	18.04 LTS bionic	Vulnerable, fix deferred
	16.04 LTS xenial	Vulnerable, fix deferred
u-boot-nezha	25.10 questing	Not in release
	25.04 plucky	Ignored end of life, was needs-triage
	24.04 LTS noble	Vulnerable, fix deferred
	22.04 LTS jammy	Vulnerable, fix deferred

Notes

mdeslaur

per Debian: "Disputable security impact and not considered a security issue by upstream; relies on system level access to bootloader for exploitation." Advisory is for a very old version, 1.1.3 Deferring for now since there are no other details.

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N