CVE-2025-4423 | SetupAutomationSmm:Vulnerability in the SMM module allow attacker to write arbitrary code and lead to memory corruption

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

Published: 2025-07-30 Last update: 2026-04-15 Assigner: 8338d8cb-57f7-4252-abc0-96fd13e98d21 Source: 8338d8cb-57f7-4252-abc0-96fd13e98d21
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-4423 is rated Moderate Risk (41.9/100): CVSS High severity, with low exploitation likelihood (EPSS 0.09%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-4423

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-26 0.01% 0.09% +0.08%
2 2025-07-30 — 0.01% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-4423

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.2 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.5 6.0 8338d8cb-57f7-4252-abc0-96fd13e98d21

Weakness enumeration for CVE-2025-4423

Affected software / configurations for CVE-2025-4423

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-4423

cvelogic Threat Intelligence