CVE-2023-34761Public exploit

Uncensored message display via client-side filter bypass

Published Jun 28, 2023 · Updated Nov 27, 2024

Missing authentication in 7-Eleven LED Message Cup 1.3.1 allows physically proximate attackers to display uncensored text over BLE. The Hello Cup Android app applies its regex wordlist only before transmission, while the cup accepts BLE messages from a modified app without enforcing the filter. BLE proximity and a modified client are required; the demonstrated consequence is unauthorized display content rather than data disclosure or service interruption.

CVSS severity6.5
Medium
EPSS probability0.50%
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 7-Eleven LED Message Cup 1.3.1 allows physically proximate attackers to display uncensored text over BLE. The Hello Cup Android app applies its regex wordlist only before transmission, while the cup accepts BLE messages from a modified app without enforcing the filter. BLE proximity and a modified client are required; the demonstrated consequence is unauthorized display content rather than data disclosure or service interruption.

The record

CVE
CVE-2023-34761
Published
Jun 28, 2023
Updated
Nov 27, 2024
Vendor
7-Eleven, Inc.
Product
7-Eleven LED Message Cup
Classifications
CWE-306, T1491.002
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=1.3.1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

7-Eleven, Inc. · 7-Eleven LED Message Cupversion=1.3.1

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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-306Missing Authentication for Critical Function
T1491.002External Defacement

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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