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CVE-2021-3122

89
FAUCET Score

CVE-2021-3122 is a critical remote code execution vulnerability affecting CMCAgent in NCR Command Center Agent 16.3 on Aloha POS/BOH servers. It allows an unauthenticated attacker to execute arbitrary commands as SYSTEM by submitting a crafted XML document to port 8089. This vulnerability has a CVSS score of 9.8 (CRITICAL) due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. The vulnerability has been actively exploited in the wild, with public exploit modules available in Metasploit and Nuclei, despite limited community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
16.3CPE matchmatch criteria
cpe:2.3:a:ncr:command_center_agent:16.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
87.38%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: NCR Command Center Agent Remote Code Execution · Feb 7, 2021
Nuclei: CVE-2021-3122 · Sep 27, 2025
This CVE's current EPSS score of 0.8738 is in the 99th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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