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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

SeverityHigh
CVSS8.2
Exploit probability16. percentile0.2%
ProductInsydeH2O
PublishedJul 30, 2025
First seenJul 30, 2025
Weakness typeCWE-787Out-of-bounds write

How to fix

Update
  • Insyde Software InsydeH2OL05.05.40.011803.172079 or later

Affected products

ProductAffected versionsFixed in
Insyde Software InsydeH2OFeature developed for Lenovo ≤ v < L05.05.40.011803.172079L05.05.40.011803.172079

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