Insecure Default Password in Unitronics Vision PLC and HMI
CVE-2023-6448 affects Unitronics VisiLogic before version 9.9.00, as used in Unitronics Vision and Samba PLCs and HMIs. The vulnerability is the use of a default administrative password on the device. Because the administrative credential is default and known, an unauthenticated attacker who can reach the PLC or HMI over the network can authenticate with administrative privileges and take control of the system. Public reporting and government advisories tie this issue to active exploitation against internet-exposed Unitronics devices in critical infrastructure environments, including the water sector.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An authentication weakness in Unitronics Vision Series PLCs and HMIs caused by default administrative passwords, allowing an unauthenticated attacker with network access to take administrative control of the system.
Unitronics VisiLogic/Vision PLC/HMI insecure default administrative password (hard-coded/default credentials).
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.