Cyber Resilience

CVE-2024-42444

Race Condition in Ami Aptio V 5.0 – 5.038

Race Condition
Published
14 January 2025
Modified
02 October 2025
Patch / advisory
View advisory
CVSS Score v3.1 7.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS Score 0.0012 2th percentile
Risk Priority 51 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2024-42444 is a high-severity Time-of-check Time-of-use (TOCTOU) Race Condition (CWE-367) vulnerability in Ami Aptio V. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Path Interception (T1034); ranked at the 2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AC-25 (Reference Monitor) and AC-3 (Access Enforcement) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2024-42444 is a Time-of-Check Time-of-Use (TOCTOU) race condition vulnerability, classified as CWE-367, affecting the APTIOV BIOS firmware. Published on January 14, 2025, it carries a CVSS v3.1 base score of 7.5 (High), with vector AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H, indicating local access vector, high attack complexity, low privileges required, user interaction needed, changed scope, and high impacts across confidentiality, integrity, and availability.

A local attacker with low privileges can exploit this vulnerability through local means by inducing the TOCTOU race condition, though it demands high complexity and user interaction. Successful exploitation enables execution of arbitrary code on the target device.

American Megatrends has published security advisory AMI-SA-2025001, which details the vulnerability and associated mitigations, available at https://go.ami.com/hubfs/Security%20Advisories/2025/AMI-SA-2025001.pdf.

EU & UK References

Vulnerability Data

APTIOV contains a vulnerability in BIOS where an attacker may cause a TOCTOU Race Condition by local means. Successful exploitation of this vulnerability may lead to execution of arbitrary code on the target device.

CWE(s)
CWE-367

Related Threats

MITRE ATT&CK Enterprise Techniques

T1034 Path Interception Persistence
**This technique has been deprecated.
attack.mitre.org →
T1548 Abuse Elevation Control Mechanism Privilege Escalation
Adversaries may circumvent mechanisms designed to control privilege elevation to gain higher-level permissions.
attack.mitre.org →
T1574 Hijack Execution Flow Stealth
Adversaries may execute their own malicious payloads by hijacking the way operating systems run programs.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-42446Same product: Ami Aptio V
CVE-2024-54084Same product: Ami Aptio V
CVE-2024-33656Same product: Ami Aptio V
CVE-2024-2315Same product: Ami Aptio V
CVE-2023-34470Same product: Ami Aptio V
CVE-2023-34469Same product: Ami Aptio V
CVE-2025-58770Same product: Ami Aptio V
CVE-2025-33045Same product: Ami Aptio V
CVE-2024-33658Same product: Ami Aptio V
CVE-2023-39538Same product: Ami Aptio V

Affected Assets

ami
aptio v
5.0 — 5.038

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V15.4.2
  • V17.2.6

Mitigating Controls (NIST 800-53 r5) AI

AC-25 Reference Monitor good match

A reference monitor that is always invoked and analyzable structurally eliminates the non-atomic check-then-use pattern underlying TOCTOU.

AC-3 Access Enforcement partial match

Access enforcement that performs an atomic check-and-use decision directly stops the window in which a TOCTOU race can be exploited.

SC-39 Process Isolation partial match

Process isolation limits the blast radius of a successful TOCTOU exploitation but does not remove the race itself.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly include coding standards and reviews that prevent TOCTOU race conditions.

References