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CVE-2023-6448: Unitronics Vision PLC and HMI Insecure Default Password Vulnerability

88
Patch now
CRITICAL 9.8EXPLOITEDREMOTEUPGRADEUPGRADEUPGRADE

CVE-2023-6448 is a critical-severity flaw (CVSS 9.8) affecting vision1210 firmware, vision1040 firmware, vision700 firmware, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unitronics VisiLogic before version 9.9.00, used in Vision and Samba PLCs and HMIs, uses a default administrative password. An unauthenticated attacker with network access can take administrative control of a vulnerable system.

Why this priority

  • Critical severity
  • Exploited in the wild (CISA KEV)
  • CISA SSVC: automatable with total technical impact
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance2.1% (top 18%)
CISA exploited listYes, fix due 2023-12-18
WeaknessCWE-1188, CWE-798
Published2023-12-05
Last modified2026-06-17
Publisher (CNA): Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government · Vendor: unitronics

Share: LinkedIn · X · Reddit

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

Am I affected?

Timeline

unitronics vision1210 firmware UPGRADE
Affected: < 12.38
Fixed in: 12.38
Safe to downgrade to: no unaffected older release
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.
unitronics vision1040 firmware UPGRADE
Affected: < 12.38
Fixed in: 12.38
Safe to downgrade to: no unaffected older release
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.
unitronics vision700 firmware UPGRADE
Affected: < 12.38
Fixed in: 12.38
Safe to downgrade to: no unaffected older release
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.
unitronics vision570 firmware UPGRADE
Affected: < 12.38
Fixed in: 12.38
Safe to downgrade to: no unaffected older release
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.
unitronics vision560 firmware UPGRADE
Affected: < 12.38
Fixed in: 12.38
Safe to downgrade to: no unaffected older release
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.
unitronics vision430 firmware UPGRADE
Affected: < 12.38
Fixed in: 12.38
Safe to downgrade to: no unaffected older release
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.

Exact fixes by distribution

Fedora ELN · libmamba · FIXED · 2.10.0-1.eln159 · FEDORA-2026-cc57be9e65 · source
sudo dnf upgrade --advisory=FEDORA-2026-cc57be9e65
Fedora 46 · rubygem-selenium-webdriver · FIXED · 4.34.0-5.fc46 · FEDORA-2026-111c6e6363 · source
sudo dnf upgrade --advisory=FEDORA-2026-111c6e6363
Verify at the official source NVD · CVE Program · CISA KEV catalog · 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-2023-6448?

vision1210 firmware: upgrade to 12.38; vision1040 firmware: upgrade to 12.38; vision700 firmware: upgrade to 12.38. Exact commands for each OS are on this page.

Is CVE-2023-6448 being exploited?

Yes. CVE-2023-6448 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2023-6448 affect?

CVE-2023-6448 affects vision1210 firmware, vision1040 firmware, vision700 firmware. Severity is critical (CVSS 9.8). Unitronics VisiLogic before version 9.9.00, used in Vision and Samba PLCs and HMIs, uses a default administrative password. An unauthenticated attacker with network access can take administrative control of a vulnerable system.

How urgent is CVE-2023-6448?

Priority 88/100. Critical severity; Exploited in the wild (CISA KEV); CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

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References

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