Raw vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2024-54084 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-2024-54084 is a Time-of-check Time-of-use (TOCTOU) race condition vulnerability in APTIOV, a BIOS firmware component developed by American Megatrends (AMI). The flaw allows an attacker to exploit a timing discrepancy during local operations within the BIOS environment, potentially leading to arbitrary code execution. It is classified under CWE-367 and carries a CVSS v3.1 base score of 7.5 (AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H), indicating high severity due to its potential for complete system compromise despite requiring privileged local access.
Exploitation requires a local attacker with high privileges (PR:H) on the target system, combined with high attack complexity (AC:H) to successfully trigger the race condition. No user interaction is needed (UI:N), and the vulnerability's scoped impact (S:C) enables attackers to achieve high confidentiality, integrity, and availability effects, including arbitrary code execution at the BIOS level. This could allow persistent malware implantation or firmware manipulation, evading higher-level operating system security controls.
For mitigation details, refer to the official AMI security advisory (AMI-SA-2025003) at https://go.ami.com/hubfs/Security%20Advisories/2025/AMI-SA-2025003.pdf, published alongside the CVE disclosure on 2025-03-11.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-54251
Vulnerability Data
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.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V15.4.2V17.2.6
Mitigating Controls (NIST 800-53 r5) AI
A reference monitor that is always invoked and analyzable structurally eliminates the non-atomic check-then-use pattern underlying TOCTOU.
Access enforcement that performs an atomic check-and-use decision directly stops the window in which a TOCTOU race can be exploited.
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.
Secure SDLC practices directly include coding standards and reviews that prevent TOCTOU race conditions.