Auth bypass in Shenzhen Hcc Technology Mpos M6 Plus
CVE-2026-4583
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (32.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Shenzhen Hcc Technology Mpos M6 Plus — versions 1V.31-N
Weakness classification (CWE)
References
- vuldb.com/ (vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/Davim09/m6plusexploit/blob/main/docs/CVE-2-Replay.md (exploit)
Frequently asked questions
- What is CVE-2026-4583?
- CVE-2026-4583 is a medium-severity vulnerability in Shenzhen Hcc Technology Mpos M6 Plus, classified under Improper Authentication. CVSS score: 5.0/10. Published 2026-03-23.
- How severe is CVE-2026-4583?
- Medium severity. CVSS v3 base score is 5.0 out of 10.