CVE-2026-4582Public exploit

Unauthorized transactions via unauthenticated Bluetooth commands

Published Mar 23, 2026 · Updated Mar 23, 2026

Missing authentication in Shenzhen HCC Technology MPOS M6 PLUS 1V.31-N allows physically proximate attackers to inject Bluetooth transaction commands. The application protocol accepts commands protected only by a recalculable one-byte XOR checksum and performs no HMAC, signature, or peer-identity verification. A Bluetooth adapter, terminal address, protocol knowledge, and a connection window are required; accepted commands can alter transaction parameters and query terminal data.

CVSS severity5.0
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Shenzhen HCC Technology MPOS M6 PLUS 1V.31-N allows physically proximate attackers to inject Bluetooth transaction commands. The application protocol accepts commands protected only by a recalculable one-byte XOR checksum and performs no HMAC, signature, or peer-identity verification. A Bluetooth adapter, terminal address, protocol knowledge, and a connection window are required; accepted commands can alter transaction parameters and query terminal data.

The record

CVE
CVE-2026-4582
Published
Mar 23, 2026
Updated
Mar 23, 2026
Vendor
Shenzhen HCC Technology Co., Ltd.
Product
MPOS M6 PLUS
Classifications
CWE-287, CWE-306
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

4.3VulDBAV:A/AC:H/Au:N/C:P/I:P/A:P
1.3VulDBCVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.0VulDBCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-306Missing Authentication for Critical Function

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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