# CVE-2026-40639: Weak cryptography in DELL EMBEDDED PC 3000

> An unauthenticated attacker with physical access can exploit weak password encoding in Dell BIOS to elevate privileges.

- **Severity:** Medium 5.7 (`CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jun 2026
- **Updated:** 9 Jun 2026
- **Also known as:** GHSA-wgcp-rfq6-33jh

## What is CVE-2026-40639?

CVE-2026-40639 is a medium-severity vulnerability in DELL EMBEDDED PC 3000, published on 9 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Dell Client Platform BIOS contains a Weak Encoding for Password vulnerability. An unauthenticated attacker with physical access could potentially exploit this vulnerability, leading to Elevation of Privileges.

Weakness: CWE-261 (Weak Encoding for Password)

## Which versions are affected by CVE-2026-40639?


## How do I fix CVE-2026-40639?

No fix has been published for CVE-2026-40639 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-40639 being exploited?

There is no known exploitation of CVE-2026-40639 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-40639 and fix it if it is affected.

What it is: CVE-2026-40639 is a medium-severity vulnerability in DELL EMBEDDED PC 3000, published on 9 Jun 2026. 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-2026-40639 in the wild and no public exploit code.

Affected product: DELL EMBEDDED PC 3000. 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-2026-40639/ (Markdown: https://insights.sbomify.com/CVE-2026-40639/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-40639
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40639
- OSV: https://osv.dev/vulnerability/CVE-2026-40639

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-40639/
Summaries are generated and may contain mistakes; the official description above is the record.