CVE-2024-50920Public exploit

Fake-node insertion via malformed controller packets

Published Dec 10, 2024 · Updated Dec 11, 2024

Insecure permissions in Silicon Labs Z-Wave Series 700 and 800 SDK 7.21.1 and earlier allow attackers to add a fake node via crafted packets. The controller accepts malformed Z-Wave packets and records an unauthorized node in controller memory without enforcing node-addition permissions. Exploitation requires adjacent Z-Wave radio access but no authentication or user interaction; the demonstrated consequence is unauthorized modification of the controller's node inventory.

CVSS severity8.8
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure permissions in Silicon Labs Z-Wave Series 700 and 800 SDK 7.21.1 and earlier allow attackers to add a fake node via crafted packets. The controller accepts malformed Z-Wave packets and records an unauthorized node in controller memory without enforcing node-addition permissions. Exploitation requires adjacent Z-Wave radio access but no authentication or user interaction; the demonstrated consequence is unauthorized modification of the controller's node inventory.

The record

CVE
CVE-2024-50920
Published
Dec 10, 2024
Updated
Dec 11, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-281, T1565.001
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 11, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 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-281Improper Preservation of Permissions
T1565.001Stored Data Manipulation

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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