# CVE-2020-3386: Cisco Data Center Network Manager Improper Authorization Vulnerability

> Low-privileged attackers can bypass authorization in Cisco DCNM REST API to perform administrative actions, requiring immediate patching.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 31 Jul 2020
- **Updated:** 13 Nov 2024
- **Also known as:** GHSA-pj5q-9mff-24rh

## What is CVE-2020-3386?

CVE-2020-3386 is a high-severity missing authorization vulnerability in Cisco Data Center Network Manager, published on 31 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability in the REST API endpoint of Cisco Data Center Network Manager (DCNM) could allow an authenticated, remote attacker with a low-privileged account to bypass authorization on the API of an affected device. The vulnerability is due to insufficient authorization of certain API functions. An attacker could exploit this vulnerability by sending a crafted request to the API using low-privileged credentials. A successful exploit could allow the attacker to perform arbitrary actions through the REST API with administrative privileges.

Weakness: CWE-863 (Incorrect Authorization), CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2020-3386?

It affects 1 product.


Products: Cisco Data Center Network Manager.

## How do I fix CVE-2020-3386?

No fix has been published for CVE-2020-3386 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3386 being exploited?

There is no known exploitation of CVE-2020-3386 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Data Center Network Manager

- [CVE-2020-3382](https://insights.sbomify.com/CVE-2020-3382/): Cisco Data Center Network Manager Authentication Bypass Vulnerability (critical 9.8)
- [CVE-2019-15975](https://insights.sbomify.com/CVE-2019-15975/): Cisco Data Center Network Manager Authentication Bypass Vulnerabilities (critical 9.8)
- [CVE-2019-15976](https://insights.sbomify.com/CVE-2019-15976/): Cisco Data Center Network Manager Authentication Bypass Vulnerabilities (critical 9.8)
- [CVE-2019-15977](https://insights.sbomify.com/CVE-2019-15977/): Cisco Data Center Network Manager Authentication Bypass Vulnerabilities (critical 9.8)
- [CVE-2019-1619](https://insights.sbomify.com/CVE-2019-1619/): Cisco Data Center Network Manager Authentication Bypass Vulnerability (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-3386 and fix it if it is affected.

What it is: CVE-2020-3386 is a high-severity missing authorization vulnerability in Cisco Data Center Network Manager, published on 31 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-3386 in the wild and no public exploit code.

Affected product: Cisco Data Center Network Manager. 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-2020-3386/ (Markdown: https://insights.sbomify.com/CVE-2020-3386/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3386
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3386
- OSV: https://osv.dev/vulnerability/CVE-2020-3386

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-3386/
Summaries are generated and may contain mistakes; the official description above is the record.