CVE-2023-39842Public exploit

Unauthorized access via cloneable unencrypted RFID tags

Published Aug 15, 2023 · Updated Oct 8, 2024

Missing RFID encryption in Digoo DG-HAMB Smart Home Security System 1.0 allows physically proximate attackers to clone access tags. Its low-frequency RFID tag exposes a plaintext numeric identifier that the system accepts without cryptographic authentication. Brief proximity to a valid tag lets a phone or dedicated reader copy the identifier to blank tags with the original tag's permissions.

CVSS severity2.4
Low
EPSS probability0.14%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing RFID encryption in Digoo DG-HAMB Smart Home Security System 1.0 allows physically proximate attackers to clone access tags. Its low-frequency RFID tag exposes a plaintext numeric identifier that the system accepts without cryptographic authentication. Brief proximity to a valid tag lets a phone or dedicated reader copy the identifier to blank tags with the original tag's permissions.

The record

CVE
CVE-2023-39842
Published
Aug 15, 2023
Updated
Oct 8, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-311
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 8, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.4NIST NVDCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-311Missing Encryption of Sensitive Data

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo