CVE-2023-6448
Published: December 11, 2023
Official Description
Unitronics Vision Series PLCs and HMIs ship with an insecure default password, which if left unchanged, can allow attackers to execute remote commands.
CISA KEV Advisory
Unitronics Vision PLC and HMI Insecure Default Password Vulnerability
Unitronics Vision Series PLCs and HMIs ship with an insecure default password, which if left unchanged, can allow attackers to execute remote commands.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Risk Analysis
This high-severity vulnerability in Unitronics Vision Series PLCs and HMIs stems from an insecure default password, which if not changed, allows remote command execution. The high EPSS score of 0.13290 indicates a significant likelihood of exploitation, making this an urgent concern. This vulnerability is confirmed to be actively exploited in the wild.
Active exploitation of this vulnerability has been observed in the wild, and it is included in CISA's KEV catalog. The ability to execute remote commands due to default credentials makes it a critical target.
Change the default passwords on all Unitronics Vision Series PLCs and HMIs immediately. Implement strong, unique passwords and consider network segmentation for these critical devices.
Technical Analysis
CVE-2023-6448 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2023-6448 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-6448 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1