CVE-2023-6448

Unitronics Vision PLC and HMI: Insecure Default Password

As of , CVE-2023-6448 in Unitronics Vision PLC and HMI is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.

Exploited
Yes: CISA listed it on 11 December 2023
US federal deadline
18 December 20237 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.02Higher than 80% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.00 on 11 December 2023EPSS on the day CISA listed it.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
Vendor advice: downloads.unitronicsplc.comLinks below, from CISA's entry.

What CISA says to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA's required action

  • downloads.unitronicsplc.comNote that while it is possible to change the default password, implementors are encouraged to remove affected controllers from public…

What the flaw is

Unitronics Vision Series PLCs and HMIs ship with an insecure default password, which if left unchanged, can allow attackers to execute remote commands.

CISA's description

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.

The CVE record's description, from cisa-cg

CVE published
5 December 2023
Assigned by
cisa-cg
CVSS
9.8 Critical (CVSS 3.1, from the CNA)
CWE-1188
Initialization of a Resource with an Insecure Default
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

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