# CVE-2026-20200: Cisco Integrated Management Controller Argument Injection and Remote Code Execution Vulnerability

> Authenticated attackers can inject commands into Cisco IMC to execute arbitrary code and gain root privileges on the underlying operating system.

- **Severity:** High 8.8 (`CVSS:3.1/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:** 5 Aug 2026
- **Updated:** 16 Sep 2026
- **Also known as:** GHSA-xq7x-x23m-gmh8

## What is CVE-2026-20200?

CVE-2026-20200 is a high-severity command injection vulnerability in Cisco Unified Computing System, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with low privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root. 

This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted inputs to the web-based management interface of the affected software. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user. 

Weakness: CWE-141 (Improper Neutralization of Parameter/Argument Delimiters)

## Which versions are affected by CVE-2026-20200?

It affects 1 product.


Products: Cisco Unified Computing System.

## How do I fix CVE-2026-20200?

No fix has been published for CVE-2026-20200 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-20200 being exploited?

There is no known exploitation of CVE-2026-20200 in the wild and no public exploit code.

Public exploit code:

- PoC toolkit for exploiting Cisco IMC RCE CVE-2026-20200 (github_poc): https://github.com/NSIDE-ATTACK-LOGIC/CIMCown

## Other vulnerabilities in Cisco Unified Computing System

- [CVE-2026-20094](https://insights.sbomify.com/CVE-2026-20094/): Cisco Integrated Management Controller Command Injection Vulnerability (high 8.8)
- [CVE-2018-0430](https://insights.sbomify.com/CVE-2018-0430/): Cisco Integrated Management Controller Command Injection Vulnerability (high 8.8)
- [CVE-2018-0431](https://insights.sbomify.com/CVE-2018-0431/): Cisco Integrated Management Controller Command Injection Vulnerability (high 8.8)
- [CVE-2012-4078](https://insights.sbomify.com/CVE-2012-4078/): Auth bypass in n/a (high 8.5)
- [CVE-2018-0338](https://insights.sbomify.com/CVE-2018-0338/): Command injection in Cisco Unified Computing System unknown (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-20200 and fix it if it is affected.

What it is: CVE-2026-20200 is a high-severity command injection vulnerability in Cisco Unified Computing System, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-20200 in the wild and no public exploit code.

Affected product: Cisco Unified Computing System. 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-2026-20200/ (Markdown: https://insights.sbomify.com/CVE-2026-20200/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-20200
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-20200
- OSV: https://osv.dev/vulnerability/CVE-2026-20200

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-20200/
Summaries are generated and may contain mistakes; the official description above is the record.