# CVE-2021-21507: Weak cryptography in VRTX Switch Modules

> Weak password encryption in Dell Networking X-Series and VRTX Switch Modules allows remote attackers to disclose user credentials and potentially access the system.

- **Severity:** High 8.8 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 30 Apr 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-r2xr-pxxq-cxv4

## What is CVE-2021-21507?

CVE-2021-21507 is a high-severity vulnerability in Dell VRTX Switch Modules, published on 30 Apr 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Dell EMC Networking X-Series firmware versions prior to 3.0.1.8 and Dell EMC PowerEdge VRTX Switch Module firmware versions prior to 2.0.0.82 contain a Weak Password Encryption Vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability, leading to the disclosure of certain user credentials. The attacker may be able to use the exposed credentials to access the vulnerable system with privileges of the compromised account.

Weakness: CWE-326 (Inadequate Encryption Strength), CWE-261 (Weak Encoding for Password)

## Which versions are affected by CVE-2021-21507?

It affects 11 products.


Products: Dell R1-2210 Firmware, Dell R1-2401 Firmware, Dell X1008 Firmware, Dell X1008p Firmware, Dell X1018 Firmware, Dell X1018p Firmware, Dell X1026 Firmware, Dell X1026p Firmware, Dell X1052 Firmware, Dell X1052p Firmware, Dell X4012 Firmware.

## How do I fix CVE-2021-21507?

No fix has been published for CVE-2021-21507 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-21507 being exploited?

There is no known exploitation of CVE-2021-21507 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-21507 and fix it if it is affected.

What it is: CVE-2021-21507 is a high-severity vulnerability in Dell VRTX Switch Modules, published on 30 Apr 2021. 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-2021-21507 in the wild and no public exploit code.

Affected product: Dell VRTX Switch Modules. 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-2021-21507/ (Markdown: https://insights.sbomify.com/CVE-2021-21507/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-21507
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-21507
- OSV: https://osv.dev/vulnerability/CVE-2021-21507

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-21507/
Summaries are generated and may contain mistakes; the official description above is the record.