CVE-2023-2003: Embedded malicious code vulnerability in Vision1210, in the build 5 of operating system version 4.3, which cou

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CRITICAL 9.1REMOTEMITIGATE

CVE-2023-2003 is a critical-severity flaw (CVSS 9.1) affecting vision1210 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Embedded malicious code vulnerability in Vision1210, in the build 5 of operating system version 4.3, which could allow a remote attacker to store base64-encoded malicious code in the device's data tables via the PCOM protocol, which can then be retrieved by a client and executed on the device.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-506
Published	2023-07-13
Last modified	2026-06-17

Publisher (CNA): Spanish National Cybersecurity Institute, S.A. (INCIBE) · Vendor: unitronics

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

Am I affected?

Timeline

2023-07-13 12:15 UTCPublished CVE record published
2026-06-17 05:51 UTCUpdated Record last modified

unitronics vision1210 firmware MITIGATE

Affected: 4.3 build_5

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.3

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-2023-2003?

vision1210 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-2003 being exploited?

CVE-2023-2003 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-2023-2003 affect?

CVE-2023-2003 affects vision1210 firmware. Severity is critical (CVSS 9.1). Embedded malicious code vulnerability in Vision1210, in the build 5 of operating system version 4.3, which could allow a remote attacker to store base64-encoded malicious code in the device's data tables via the PCOM protocol, which can the

How urgent is CVE-2023-2003?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-6448 CRITICAL 9.8 EXPLOITED UPGRADE UPGRADE Unitronics Vision PLC and HMI Insecure Default Password Vulnerability

References

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