CVE-2023-32170: Unified Automation UaGateway OPC UA Server Improper Input Validation Denial-of-Service Vulnerability

Q: How do I fix CVE-2023-32170?

uagateway: upgrade to 1.5.13.487. Exact commands for each OS are on this page.

Q: Is CVE-2023-32170 being exploited?

CVE-2023-32170 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-32170 affect?

CVE-2023-32170 affects uagateway. Severity is medium (CVSS 6.5). Unified Automation UaGateway OPC UA Server Improper Input Validation Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation UaGatew

Q: How urgent is CVE-2023-32170?

Priority 35/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2023-32170 is a medium-severity flaw (CVSS 6.5) affecting uagateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unified Automation UaGateway OPC UA Server Improper Input Validation Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation UaGateway. User interaction is required to exploit this vulnerability in that the target must choose to accept a client certificate. The specific flaw exists within the processing of client certificates. The issue re

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-20
Published	2024-05-03
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: unified-automation

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-05-03 02:15 UTCPublished CVE record published
2026-06-17 05:58 UTCUpdated Record last modified

unified-automation uagateway UPGRADE

Affected: < 1.5.13.487

Fixed in: 1.5.13.487

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy uagateway || rpm -q uagateway || uagateway --version

2. UPGRADE to 1.5.13.487 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade uagateway

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade uagateway

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-32170?

uagateway: upgrade to 1.5.13.487. Exact commands for each OS are on this page.

Is CVE-2023-32170 being exploited?

CVE-2023-32170 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-32170 affect?

CVE-2023-32170 affects uagateway. Severity is medium (CVSS 6.5). Unified Automation UaGateway OPC UA Server Improper Input Validation Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation UaGatew

How urgent is CVE-2023-32170?

Priority 35/100. No elevated risk signals yet.

Related CVEs

CVE-2023-41185 HIGH 7.5 UPGRADE Unified Automation UaGateway Certificate Parsing Integer Overflow Denial-of-Service Vulnerability
CVE-2023-32174 CRITICAL 9.1 UPGRADE Unified Automation UaGateway NodeManagerOpcUa Use-After-Free Remote Code Execution Vulnerability
CVE-2023-32173 MEDIUM 5.8 UPGRADE Unified Automation UaGateway AddServer XML Injection Denial-of-Service Vulnerability
CVE-2023-32172 MEDIUM 6.5 UPGRADE Unified Automation UaGateway OPC UA Server Use-After-Free Denial-of-Service Vulnerability
CVE-2023-32171 MEDIUM 6.5 UPGRADE Unified Automation UaGateway OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability

References

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