---
id: "CVE-2023-6448"
kind: "vulnerability"
aliases: ["CVE-2023-6448"]
title: "Unitronics VisiLogic before version 9.9.00, used in Vision and Samba PLCs and HMIs, uses a default administrative\u2026"
severity: "critical"
cvss: 9.8
epss: null
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Unitronics Vision PLC and HMI", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "unitronics vision1210 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics vision1040 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics vision700 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics vision570 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics vision560 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics vision430 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics vision350 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics vision130 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics vision230 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics vision280 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics vision290 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics vision530 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics vision120 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics visilogic", "fixed": ["9.9.00"], "affected": "< 9.9.00", "ecosystem": "vendor"}, {"name": "unitronics samba 3.5 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics samba 4.3 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}, {"name": "unitronics samba 7 firmware", "fixed": ["12.38"], "affected": "< 12.38", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "hmi", "industrial-control", "infrastructure", "ot", "plc", "unitronics"]
not_affected_if: ["default-password-changed"]
published_at: "2023-12-05T18:15:12+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T22:29:04+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-6448", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-6448", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# Unitronics VisiLogic before version 9.9.00, used in Vision and Samba PLCs and HMIs, uses a default administrative…

Unitronics Vision Series PLCs and HMIs ship with a default password that stays in place unless the owner changes it. An attacker who knows or guesses that default can run remote commands on the device.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Unitronics Vision PLC and HMI affected ? fixed ?
- vendor:unitronics vision1210 firmware affected < 12.38 fixed 12.38
- vendor:unitronics vision1040 firmware affected < 12.38 fixed 12.38
- vendor:unitronics vision700 firmware affected < 12.38 fixed 12.38
- vendor:unitronics vision570 firmware affected < 12.38 fixed 12.38
- vendor:unitronics vision560 firmware affected < 12.38 fixed 12.38
- vendor:unitronics vision430 firmware affected < 12.38 fixed 12.38
- vendor:unitronics vision350 firmware affected < 12.38 fixed 12.38
- vendor:unitronics vision130 firmware affected < 12.38 fixed 12.38
- vendor:unitronics vision230 firmware affected < 12.38 fixed 12.38
- vendor:unitronics vision280 firmware affected < 12.38 fixed 12.38
- vendor:unitronics vision290 firmware affected < 12.38 fixed 12.38
- vendor:unitronics vision530 firmware affected < 12.38 fixed 12.38
- vendor:unitronics vision120 firmware affected < 12.38 fixed 12.38
- vendor:unitronics visilogic affected < 9.9.00 fixed 9.9.00
- vendor:unitronics samba 3.5 firmware affected < 12.38 fixed 12.38
- vendor:unitronics samba 4.3 firmware affected < 12.38 fixed 12.38
- vendor:unitronics samba 7 firmware affected < 12.38 fixed 12.38

## How to check

Check whether any Unitronics Vision PLC or HMI still uses the factory default password.

## Fix

Change the default password on every Unitronics Vision device, following the vendor instructions; if no mitigation is available, discontinue use of the product (per CISA).

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-6448
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2023-6448

## From the sources

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

CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_