Zero-day vulnerability in Unitronics Vision

Use of default credentials
CVE-2023-6448

Not patched

Vulnerability details

Advisory: SB2023121235 - Use of default credentials in Unitronics Vision Series PLCs and HMIs

Vulnerable component: Unitronics Vision

CVE-ID: CVE-2023-6448

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-1392 - Use of Default Credentials

Description:

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to Unitronics Vision Series PLCs and HMIs use default administrative passwords. A remote attacker with network access to a PLC or HMI can gain administrative control over the system.

Note, the vulnerability is being actively exploited in the wild.


External links:

https://www.waterisac.org/portal/tlpclear-water-utility-control-system-cyber-incident-advisory-icsscada-incident-municipal

https://www.waterisac.org/portal/tlpclear-cisa-releases-alert-exploitation-unitronics-plcs-used-water-and-wastewater-systems

https://www.cisa.gov/news-events/alerts/2023/11/28/exploitation-unitronics-plcs-used-water-and-wastewater-systems


About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.