# CVE-2025-33045: Legacy Serial Redirection SMRAM Vulnerabilities

> A privileged local user can exploit BIOS vulnerabilities to disclose sensitive information and write arbitrary data, compromising system integrity.

- **Severity:** High 8.2 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Sep 2025
- **Updated:** 9 Sep 2025
- **Also known as:** GHSA-9m5j-r52w-m9v5

## What is CVE-2025-33045?

CVE-2025-33045 is a high-severity vulnerability in AMI AptioV, published on 9 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

APTIOV contains vulnerabilities in the BIOS where a privileged user may cause “Write-what-where Condition” and “Exposure of Sensitive Information to an Unauthorized Actor” through local access. The successful exploitation of these vulnerabilities can lead to information disclosure, arbitrary data writing, and impact Confidentiality, Integrity, and Availability.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), CWE-123 (Write-what-where Condition)

## Which versions are affected by CVE-2025-33045?

It affects 1 product.


Products: Ami Aptio V.

## How do I fix CVE-2025-33045?

No fix has been published for CVE-2025-33045 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-33045 being exploited?

There is no known exploitation of CVE-2025-33045 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-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)
- [CVE-2024-33656](https://insights.sbomify.com/CVE-2024-33656/): Memory Leak in SmmComuptrace Module (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-33045 and fix it if it is affected.

What it is: CVE-2025-33045 is a high-severity vulnerability in AMI AptioV, published on 9 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-33045 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-2025-33045/ (Markdown: https://insights.sbomify.com/CVE-2025-33045/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-33045
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-33045
- OSV: https://osv.dev/vulnerability/CVE-2025-33045

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-33045/
Summaries are generated and may contain mistakes; the official description above is the record.