CVE-2023-0971

Unauthenticated administration via undisclosed logic error

Published Jun 21, 2023 · Updated Dec 6, 2024

Incorrect authorization in Silicon Labs Z/IP Gateway 7.18.02 and earlier allows remote attackers to bypass command authentication. The vendor identifies a logic error in command authentication but has not published the affected function, validation branch, or malformed input that triggers it. Adjacent-network access is required; successful exploitation permits Z-Wave controller administration and recovery of S0 and S2 encryption keys.

CVSS severity9.6
Critical
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Silicon Labs Z/IP Gateway 7.18.02 and earlier allows remote attackers to bypass command authentication. The vendor identifies a logic error in command authentication but has not published the affected function, validation branch, or malformed input that triggers it. Adjacent-network access is required; successful exploitation permits Z-Wave controller administration and recovery of S0 and S2 encryption keys.

The record

CVE
CVE-2023-0971
Published
Jun 21, 2023
Updated
Dec 6, 2024
Vendor
Sigma Designs
Product
Z/IP Gateway
Classifications
CWE-863, CWE-268, CAPEC-233, CAPEC-122, CAPEC-115
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 6, 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 versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Sigma Designs · Z/IP GatewayAffected versions are unavailable in this record.

Published CVSS scores

9.6Silicon LabsCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
8.8NIST NVDCVSS: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.

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-268Privilege Chaining
CAPEC-233Privilege Escalation
CAPEC-122Privilege Abuse
CAPEC-115Authentication Bypass

Public exploit references

No public exploit references are available in this record.

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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