TI-2026-03988 Aliases CVE-2026-4584 GHSA-vmxp-224r-5qhc

Shenzhen HCC Technology MPOS M6 PLUS Cardholder Data cleartext transmission

MEDIUM 45CWE-310Published 2026-03-23 · Updated 2026-03-23

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: High
Attack requirements: None
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-319.

Summary

A flaw has been found in Shenzhen HCC Technology MPOS M6 PLUS 1V.31-N. This affects an unknown part of the component Cardholder Data Handler. Executing a manipulation can lead to cleartext transmission of sensitive information. The attack requires access to the local network. The attack requires a high level of complexity. It is indicated that the exploitability is difficult. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00171 6th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Shenzhen HCC Technology	MPOS M6 PLUS	1V.31-N	—	No fix listed	CNA

MPOS M6 PLUS VendorShenzhen HCC Technology Affected 1V.31-N Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-4584
2026-10-03 Alias added: GHSA-vmxp-224r-5qhc

References

Exploit 1

https://github.com/Davim09/m6plusexploit/blob/main/docs/CVE-3-DataExposure.md

TI-2026-71038 Rendered UI layer flaw in Shenzhen HCC MPOS M6 PLUS QR code display CVSS 4.0MEDIUM 5.1
TI-2026-03987 Shenzhen HCC Technology MPOS M6 PLUS Bluetooth authentication replay CVSS 4.0LOW 2.3
TI-2026-03986 Shenzhen HCC Technology MPOS M6 PLUS Bluetooth missing authentication CVSS 4.0LOW 2.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences