CVE-2026-4583: Shenzhen HCC Technology MPOS M6 PLUS Bluetooth authentication replay

Severity: medium (CVSS 5.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-23 · updated 2026-06-17
Weakness: CWE-287

Description

A vulnerability was detected in Shenzhen HCC Technology MPOS M6 PLUS 1V.31-N. Affected by this issue is some unknown functionality of the component Bluetooth Handler. Performing a manipulation results in authentication bypass by capture-replay. The attack must originate from the local network. The attack is considered to have high complexity. The exploitation is known to be difficult. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

Shenzhen HCC Technology MPOS M6 PLUS: 1V.31-N

References

https://github.com/Davim09/m6plusexploit/blob/main/docs/CVE-2-Replay.md
https://vuldb.com/?ctiid.352420
https://vuldb.com/?id.352420
https://vuldb.com/?submit.775434

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