CVE-2025-20623

Publication date 13 May 2025

Last updated 3 July 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Exposure of sensitive information caused by shared microarchitectural predictor state that influences transient execution for some Intel(R) Core™ processors (10th Generation) may allow an authenticated user to potentially enable information disclosure via local access.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
intel-microcode	25.04 plucky	Fixed 3.20250512.0ubuntu0.25.04.1
	24.10 oracular	Fixed 3.20250512.0ubuntu0.24.10.1
	24.04 LTS noble	Fixed 3.20250512.0ubuntu0.24.04.1
	22.04 LTS jammy	Fixed 3.20250512.0ubuntu0.22.04.1
	20.04 LTS focal	Fixed 3.20250512.0ubuntu0.20.04.1
	18.04 LTS bionic	Fixed 3.20250512.0ubuntu0.18.04.1+esm1
	16.04 LTS xenial	Fixed 3.20250512.0ubuntu0.16.04.1+esm1
	14.04 LTS trusty	Ignored see notes

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Notes

ebarretto

trusty cannot use intel-microcode during early boot and is therefore generally not updated.

Severity score breakdown

Parameter	Value
Base score	5.6 · Medium
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-7535-1
Intel Microcode vulnerabilities
27 May 2025