CVE-2023-32171: Unified Automation UaGateway OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability

Q: How do I fix CVE-2023-32171?

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

Q: Is CVE-2023-32171 being exploited?

CVE-2023-32171 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-2023-32171 affect?

CVE-2023-32171 affects uagateway. Severity is medium (CVSS 6.5). Unified Automation UaGateway OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation UaGatewa

Q: How urgent is CVE-2023-32171?

Priority 41/100. No elevated risk signals yet.

This month

MEDIUM 6.5UPGRADE

CVE-2023-32171 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 Null Pointer Dereference Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation UaGateway. Authentication is required to exploit this vulnerability. The specific flaw exists within the ImportCsv method. A crafted XML payload can cause a null pointer dereference. An attacker can leverage this vuln

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	Low
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-476
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-2023-32171?

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

Is CVE-2023-32171 being exploited?

CVE-2023-32171 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-2023-32171 affect?

CVE-2023-32171 affects uagateway. Severity is medium (CVSS 6.5). Unified Automation UaGateway OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation UaGatewa

How urgent is CVE-2023-32171?

Priority 41/100. 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-2023-32170 MEDIUM 6.5 UPGRADE Unified Automation UaGateway OPC UA Server Improper Input Validation Denial-of-Service Vulnerability

References

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