CVE-2025-4421

high

Description

The vulnerability was identified in the code developed specifically for Lenovo. Please visit "Lenovo Product Security Advisories and Announcements" webpage for more information about the vulnerability. https://support.lenovo.com/us/en/product_security/home

References

References
More

https://www.bleepingcomputer.com/news/security/new-lenovo-uefi-firmware-updates-fix-secure-boot-bypass-flaws/

https://www.securityweek.com/lenovo-firmware-vulnerabilities-allow-persistent-implant-deployment/

https://www.insyde.com/security-pledge/sa-2025007/

https://support.lenovo.com/us/en/product_security/home

Details

Source: Mitre, NVD

Published: 2025-07-30

Updated: 2025-07-31

Risk Information

CVSS v2

Base Score: 6.5

Vector: CVSS2#AV:L/AC:L/Au:M/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 8.2

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00012