CVE-2021-3122

Name: CVE-2021-3122
Creator: NVD / NIST
Published: 2021-02-07T20:15:12.543+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 87.38%

Last modified Jun 17, 2026

CVE-2021-3122 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.". EPSS estimates a 87.38% chance of exploitation in the next 30 days.

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."

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

87.38%

99.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Ncr	Command Center Agent	16.3

References

https://github.com/roughb8722/CVE-2021-3122-Details/blob/main/CVE-2021-3122Third Party Advisory
https://rdf2.alohaenterprise.com/client/CMCInst.zipThird Party Advisory
https://www.tetradefense.com/incident-response-services/active-exploit-a-remote-code-execution-rce-vulnerability-for-ncr-aloha-point-of-sale/Third Party Advisory
https://github.com/roughb8722/CVE-2021-3122-Details/blob/main/CVE-2021-3122Third Party Advisory
https://rdf2.alohaenterprise.com/client/CMCInst.zipThird Party Advisory
https://www.tetradefense.com/incident-response-services/active-exploit-a-remote-code-execution-rce-vulnerability-for-ncr-aloha-point-of-sale/Third Party Advisory

Timeline

Published: Feb 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3122?

How severe is CVE-2021-3122?

CVE-2021-3122 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 87.38% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3122?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3122?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST