# CVE-2024-42442: Runtime Service Access outside SMRAM

> An attacker can execute code outside System Management Mode via improper memory buffer restrictions in AMI AptioV BIOS firmware.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Nov 2024
- **Updated:** 12 Nov 2024
- **Also known as:** GHSA-jjfc-8563-3h89

## What is CVE-2024-42442?

CVE-2024-42442 is a high-severity memory corruption vulnerability in AMI AptioV, published on 12 Nov 2024. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

APTIOV contains a vulnerability in the BIOS where a user or attacker may cause an improper restriction of operations within the bounds of a memory buffer over the network. A successful exploitation of this vulnerability may lead to code execution outside of the intended System Management Mode.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2024-42442?

It affects 1 product.


Products: Ami Aptio V.

## How do I fix CVE-2024-42442?

No fix has been published for CVE-2024-42442 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-42442 being exploited?

There is no known exploitation of CVE-2024-42442 in the wild and no public exploit code.

## Other vulnerabilities in AMI AptioV

- [CVE-2022-40250](https://insights.sbomify.com/CVE-2022-40250/): Stack overflow vulnerability in SMI handler on SmmSmbiosElog. (high 8.8)
- [CVE-2025-33045](https://insights.sbomify.com/CVE-2025-33045/): Legacy Serial Redirection SMRAM Vulnerabilities (high 8.2)
- [CVE-2022-26873](https://insights.sbomify.com/CVE-2022-26873/): Memory corruption in Aptio (high 8.2)
- [CVE-2022-40261](https://insights.sbomify.com/CVE-2022-40261/): SMM memory corruption vulnerability in OverClockSmiHandler SMM driver (high 8.2)
- [CVE-2022-40262](https://insights.sbomify.com/CVE-2022-40262/): The arbitrary write vulnerability in S3Resume2Pei leads to arbitrary code execution during PEI phase. (high 8.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-42442 and fix it if it is affected.

What it is: CVE-2024-42442 is a high-severity memory corruption vulnerability in AMI AptioV, published on 12 Nov 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-42442 in the wild and no public exploit code.

Affected product: AMI AptioV. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-42442/ (Markdown: https://insights.sbomify.com/CVE-2024-42442/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-42442
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-42442
- OSV: https://osv.dev/vulnerability/CVE-2024-42442

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-42442/
Summaries are generated and may contain mistakes; the official description above is the record.