CVE-2026-4584Public exploit

Cardholder data exposure via unencrypted Bluetooth responses

Published Mar 23, 2026 · Updated Mar 23, 2026

Cleartext transmission in MPOS M6 PLUS 1V.31-N allows physically proximate attackers to read cardholder data over Bluetooth. Transaction responses place full PAN, Track 2, cardholder name, and expiry in unencrypted hexadecimal application payloads. Exposure requires access to Bluetooth traffic or a connected device; the disclosed data supports card cloning and payment fraud.

CVSS severity3.1
Low
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in MPOS M6 PLUS 1V.31-N allows physically proximate attackers to read cardholder data over Bluetooth. Transaction responses place full PAN, Track 2, cardholder name, and expiry in unencrypted hexadecimal application payloads. Exposure requires access to Bluetooth traffic or a connected device; the disclosed data supports card cloning and payment fraud.

The record

CVE
CVE-2026-4584
Published
Mar 23, 2026
Updated
Mar 23, 2026
Vendor
Shenzhen HCC Technology Co., Ltd.
Product
MPOS M6 PLUS
Classifications
CWE-319, CWE-310, T1040
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1V.31-N

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Shenzhen HCC Technology Co., Ltd. · MPOS M6 PLUSversion=1V.31-N

Published CVSS scores

1.3VulDBCVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
3.1VulDBCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
1.8VulDBAV:A/AC:H/Au:N/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
CWE-310Cryptographic Issues
T1040Network Sniffing

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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