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CVE-2024-42446: TOCTOU in SmmWhea

7.5 CVSS

Description

APTIOV contains a vulnerability in BIOS where an attacker may cause a Time-of-check Time-of-use (TOCTOU) Race Condition by local means. Successful exploitation of this vulnerability may lead to arbitrary code execution.

Classification

CVE ID: CVE-2024-42446

CVSS Base Severity: HIGH

CVSS Base Score: 7.5

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

Problem Types

CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

Affected Products

Vendor: AMI

Product: AptioV

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 2.34% (scored less or equal to compared to others)

EPSS Date: 2025-06-11 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2024-42446
https://go.ami.com/hubfs/Security%20Advisories/2025/AMI-SA-2025004.pdf

Timeline