CVE-2023-22803: LS ELECTRIC XBC-DN32U with operating system version 01.80 is missing authentication to perform critical functi

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HIGH 7.5REMOTEMITIGATE

CVE-2023-22803 is a high-severity flaw (CVSS 7.5) affecting xbc-dn32u firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

LS ELECTRIC XBC-DN32U with operating system version 01.80 is missing authentication to perform critical functions to the PLC. This could allow an attacker to change the PLC's mode arbitrarily.

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-306
Published	2023-02-15
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: ls-electric

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

Am I affected?

Timeline

2023-02-15 18:15 UTCPublished CVE record published
2026-06-17 05:36 UTCUpdated Record last modified

ls-electric xbc-dn32u firmware MITIGATE

Affected: 01.80

Fixed in: no fixed release known

Safe to downgrade to: a release before 01.80

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2023-22803?

xbc-dn32u firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-22803 being exploited?

CVE-2023-22803 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-2023-22803 affect?

CVE-2023-22803 affects xbc-dn32u firmware. Severity is high (CVSS 7.5). LS ELECTRIC XBC-DN32U with operating system version 01.80 is missing authentication to perform critical functions to the PLC. This could allow an attacker to change the PLC's mode arbitrarily.

How urgent is CVE-2023-22803?

Priority 43/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-22807 CRITICAL 9.8 MITIGATE LS ELECTRIC XBC-DN32U with operating system version 01.80 does not properly control access to the PLC over its
CVE-2023-22806 HIGH 7.5 MITIGATE LS ELECTRIC XBC-DN32U with operating system version 01.80 transmits sensitive information in cleartext when co
CVE-2023-22805 MEDIUM 6.5 MITIGATE LS ELECTRIC XBC-DN32U with operating system version 01.80 has improper access control to its read prohibition
CVE-2023-22804 CRITICAL 9.1 MITIGATE LS ELECTRIC XBC-DN32U with operating system version 01.80 is missing authentication to create users on the PLC
CVE-2023-0103 HIGH 7.5 MITIGATE If an attacker were to access memory locations of LS ELECTRIC XBC-DN32U with operating system version 01.80 th

References

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