# CVE-2022-34403: Memory corruption in CPG BIOS

> A local authenticated attacker can exploit a stack buffer overflow in Dell BIOS to execute arbitrary code in SMRAM.

- **Severity:** High 7.5 (`CVSS:3.1/AV:L/AC:H/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:** 1 Feb 2023
- **Updated:** 26 Mar 2025
- **Also known as:** GHSA-f4vh-w8qv-cvrw

## What is CVE-2022-34403?

CVE-2022-34403 is a high-severity memory corruption vulnerability in Dell Inspiron 3891 Firmware, published on 1 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Dell BIOS contains a Stack based buffer overflow vulnerability. A local authenticated attacker could potentially exploit this vulnerability by using an SMI to send larger than expected input to a parameter to gain arbitrary code execution in SMRAM.

Weakness: CWE-787 (Out-of-bounds Write), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2022-34403?

It affects 83 products.


Products: Dell Alienware M15 R6 Firmware, Dell Alienware M15 R7 Firmware, Dell Alienware M15 Ryzen Edition R5 Firmware, Dell Alienware M17 R5 Amd Firmware, Dell G15 5510 Firmware, Dell G15 5511 Firmware, Dell G15 5515 Firmware, Dell G15 5525 Firmware, Dell G5 Se 5505 Firmware, Dell Inspiron 14 5410 2-in-1 Firmware, Dell Inspiron 15 3511 Firmware, Dell Inspiron 3195 2-in-1 Firmware, Dell Inspiron 3275 Firmware, Dell Inspiron 3475 Firmware, Dell Inspiron 3505 Firmware, Dell Inspiron 3515 Firmware, Dell Inspiron 3525 Firmware, Dell Inspiron 3585 Firmware, Dell Inspiron 3595 Firmware, Dell Inspiron 3785 Firmware and 63 more.

## How do I fix CVE-2022-34403?

No fix has been published for CVE-2022-34403 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-34403 being exploited?

There is no known exploitation of CVE-2022-34403 in the wild and no public exploit code.

## Other vulnerabilities in Dell Inspiron 3891 Firmware

- [CVE-2024-52541](https://insights.sbomify.com/CVE-2024-52541/): Auth bypass in Dell Client Platform BIOS (high 8.2)
- [CVE-2022-26861](https://insights.sbomify.com/CVE-2022-26861/): Code injection in CPG BIOS (high 7.9)
- [CVE-2022-26860](https://insights.sbomify.com/CVE-2022-26860/): Memory corruption in CPG BIOS (high 7.5)
- [CVE-2021-21572](https://insights.sbomify.com/CVE-2021-21572/): Memory corruption in BIOSConnect (high 7.2)
- [CVE-2021-21573](https://insights.sbomify.com/CVE-2021-21573/): Memory corruption in BIOSConnect (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-34403 and fix it if it is affected.

What it is: CVE-2022-34403 is a high-severity memory corruption vulnerability in Dell Inspiron 3891 Firmware, published on 1 Feb 2023. 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-2022-34403 in the wild and no public exploit code.

Affected product: Dell Inspiron 3891 Firmware. 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-2022-34403/ (Markdown: https://insights.sbomify.com/CVE-2022-34403/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-34403
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-34403
- OSV: https://osv.dev/vulnerability/CVE-2022-34403

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-34403/
Summaries are generated and may contain mistakes; the official description above is the record.