CVE-2023-32170Network attack vector

Service interruption via malformed client certificate

Published May 3, 2024 · Updated Aug 2, 2024

Improper input validation in Unified Automation UaGateway 1.5.12.482 allows remote attackers to interrupt the service via a client certificate. The client-certificate processing path fails to validate certificate data before handling it, allowing malformed certificate content to trigger the denial-of-service condition. Exploitation requires an operator to accept the attacker’s certificate; public sources do not distinguish whether the interruption is a crash or hang.

CVSS severity6.5
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Unified Automation UaGateway 1.5.12.482 allows remote attackers to interrupt the service via a client certificate. The client-certificate processing path fails to validate certificate data before handling it, allowing malformed certificate content to trigger the denial-of-service condition. Exploitation requires an operator to accept the attacker’s certificate; public sources do not distinguish whether the interruption is a crash or hang.

The record

CVE
CVE-2023-32170
Published
May 3, 2024
Updated
Aug 2, 2024
Vendor
Unified Automation
Product
UaGateway
Classifications
CWE-20, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.5.12.482

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Unified Automation · UaGatewayversion=1.5.12.482

Published CVSS scores

6.5Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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