# CVE-2020-3446: Cisco vWAAS for Cisco ENCS 5400-W Series and CSP 5000-W Series Default Credentials Vulnerability

> Unauthenticated attackers can log into the NFVIS CLI with administrator privileges using default static passwords on Cisco vWAAS appliances.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Aug 2020
- **Updated:** 13 Nov 2024
- **Also known as:** GHSA-7f6q-wx66-349m

## What is CVE-2020-3446?

CVE-2020-3446 is a critical vulnerability in Cisco Wide Area Application Services (WAAS), published on 26 Aug 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in Cisco Virtual Wide Area Application Services (vWAAS) with Cisco Enterprise NFV Infrastructure Software (NFVIS)-bundled images for Cisco ENCS 5400-W Series and CSP 5000-W Series appliances could allow an unauthenticated, remote attacker to log into the NFVIS CLI of an affected device by using accounts that have a default, static password. The vulnerability exists because the affected software has user accounts with default, static passwords. An attacker with access to the NFVIS CLI of an affected device could exploit this vulnerability by logging into the CLI. A successful exploit could allow the attacker to access the NFVIS CLI with administrator privileges.

Weakness: CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2020-3446?

It affects 5 products.


Products: Cisco Csp 5228-W Firmware, Cisco Csp 5436-W Firmware, Cisco Encs 5406-W Firmware, Cisco Encs 5408-W Firmware, Cisco Encs 5412-W Firmware.

## How do I fix CVE-2020-3446?

No fix has been published for CVE-2020-3446 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3446 being exploited?

There is no known exploitation of CVE-2020-3446 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-3446 and fix it if it is affected.

What it is: CVE-2020-3446 is a critical vulnerability in Cisco Wide Area Application Services (WAAS), published on 26 Aug 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-3446 in the wild and no public exploit code.

Affected product: Cisco Wide Area Application Services (WAAS). 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-2020-3446/ (Markdown: https://insights.sbomify.com/CVE-2020-3446/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3446
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3446
- OSV: https://osv.dev/vulnerability/CVE-2020-3446

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-3446/
Summaries are generated and may contain mistakes; the official description above is the record.