CVE-2021-3122
CVE-2021-3122 is a critical-severity vulnerability in Ncr Command Center Agent with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 87% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 10.0
- EPSS exploit prediction: 87% (100th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Ncr Command Center Agent
- Published:
- Last modified:
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."
Frequently asked questions
- What is 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 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."
- How severe is CVE-2021-3122?
- CVE-2021-3122 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-3122 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 87% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-3122?
- CVE-2021-3122 affects Ncr Command Center Agent. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-3122?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-3122 published?
- CVE-2021-3122 was published on 2021-02-07 and last updated on 2026-06-17.
References
- https://github.com/roughb8722/CVE-2021-3122-Details/blob/main/CVE-2021-3122
- 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/
Affected products (1)
- cpe:2.3:a:ncr:command_center_agent:16.3:*:*:*:*:*:*:*
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