# CVE-2021-3463: Null dereference in Power Management Driver for Windows 10

> A null pointer dereference in the Lenovo Power Management Driver allows attackers to cause a system blue screen, resulting in denial of service.

- **Severity:** Medium 4.2 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 13 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-hjwp-9p4p-7cgx

## What is CVE-2021-3463?

CVE-2021-3463 is a medium-severity vulnerability in Lenovo Power Management Driver for Windows 10, published on 13 Apr 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A null pointer dereference vulnerability in Lenovo Power Management Driver for Windows 10, prior to version 1.67.17.54, that could cause systems to experience a blue screen error.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2021-3463?

It affects 1 product.


Products: Lenovo Power Management Driver.

## How do I fix CVE-2021-3463?

No fix has been published for CVE-2021-3463 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-3463 being exploited?

There is no known exploitation of CVE-2021-3463 in the wild and no public exploit code.

## Other vulnerabilities in Lenovo Power Management Driver for Windows 10

- [CVE-2021-3462](https://insights.sbomify.com/CVE-2021-3462/): Privilege escalation in Power Management Driver for Windows 10 (medium 5.5)
- [CVE-2019-6192](https://insights.sbomify.com/CVE-2019-6192/): Memory corruption in Power Management driver (medium 4.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-3463 and fix it if it is affected.

What it is: CVE-2021-3463 is a medium-severity vulnerability in Lenovo Power Management Driver for Windows 10, published on 13 Apr 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-3463 in the wild and no public exploit code.

Affected product: Lenovo Power Management Driver for Windows 10. 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-2021-3463/ (Markdown: https://insights.sbomify.com/CVE-2021-3463/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-3463
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-3463
- OSV: https://osv.dev/vulnerability/CVE-2021-3463

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-3463/
Summaries are generated and may contain mistakes; the official description above is the record.