CVE-2023-38123: Inductive Automation Ignition OPC UA Quick Client Missing Authentication for Critical Function Authentication

Q: How do I fix CVE-2023-38123?

ignition: upgrade to 8.1.26. Exact commands for each OS are on this page.

Q: Is CVE-2023-38123 being exploited?

CVE-2023-38123 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-2023-38123 affect?

CVE-2023-38123 affects ignition. Severity is high (CVSS 8.8). Inductive Automation Ignition OPC UA Quick Client Missing Authentication for Critical Function Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Inductive A

This month

HIGH 8.8UPGRADE

CVE-2023-38123 is a high-severity flaw (CVSS 8.8) affecting ignition. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Inductive Automation Ignition OPC UA Quick Client Missing Authentication for Critical Function Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Inductive Automation Ignition. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the server configuration.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.2% (top 33%)
CISA exploited list	No
Weakness	CWE-306
Published	2024-05-03
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: inductiveautomation

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 06:09 UTCUpdated Record last modified

inductiveautomation ignition UPGRADE

Affected: < 8.1.26

Fixed in: 8.1.26

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 8.1.26 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ignition

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-2023-38123?

ignition: upgrade to 8.1.26. Exact commands for each OS are on this page.

Is CVE-2023-38123 being exploited?

CVE-2023-38123 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-2023-38123 affect?

CVE-2023-38123 affects ignition. Severity is high (CVSS 8.8). Inductive Automation Ignition OPC UA Quick Client Missing Authentication for Critical Function Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Inductive A

How urgent is CVE-2023-38123?

Priority 48/100. High severity

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References

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