CVE-2023-6448KEV · OVERDUECWE-1188

Unitronics VisiLogic uses a default administrative password

Critical · published December 5, 2023

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 81.5th percentile for exploit probability.

1041
days past CISA
deadline
CVSS v3.1
9.8
EPSS
2%
Percentile
81.5
In the wild
Confirmed
What it is

🚨 An administrative password that's just sitting there waiting for someone to use it? Yes, please! CVE-2023-6448 affects Unitronics VisiLogic before version 9.9.00, allowing attackers to seize control with ease! 🔥 Imagine you live in a high-tech house equipped with smart locks but forgot to change the default code that anyone could guess. An attacker could just waltz in and control your home — devastating, right? That’s what’s happening here with these vulnerable PLCs and HMIs! An unauthenticated attacker on the same network can exploit this flaw to take complete administrative control over the device. This could lead to disastrous consequences, like tampering with control systems, causing outages, or manipulating operations. Imagine the chaos that could ensue!

Put simply

Imagine you live in a high-tech house equipped with smart locks but forgot to change the default code that anyone could guess. An attacker could just waltz in and control your home — devastating, right? That’s what’s happening here with these vulnerable PLCs and HMIs! This vulnerability stems from a default administrative password that remains unchanged in VisiLogic software versions before 9.9.00. Attackers with network access can easily authenticate as administrators without any authentication required.

What to do

An unauthenticated attacker on the same network can exploit this flaw to take complete administrative control over the device. This could lead to disastrous consequences, like tampering with control systems, causing outages, or manipulating operations. Imagine the chaos that could ensue! Immediately change the default password on all affected systems to a strong, unique one. Upgrade to VisiLogic version 9.9.00 or later to patch this critical vulnerability and ensure your systems are secure. Regularly review user permissions to maintain tight control! You've got this! Take these steps, and you’ll transform into a security hero in no time! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02089 · 81.5th percentile
Weakness
CWE-1188 · Initialization of a Resource with an Insecure Default
Published
2023-12-05T17:43Z
KEV added
2023-12-11 · due 2023-12-18
EPSS history
Timeline
  • 11 DEC 00:00Z
    Added to CISA KEV — remediate by Dec 18
    kev
  • 05 DEC 17:43Z
    Unitronics VisiLogic uses a default administrative password
    cvelistv5