CVEs / CVE-2023-6448
CVE-2023-6448: Unitronics Vision PLC and HMI Insecure Default Password Vulnerability
- Known exploited in the CISA KEV catalog since 11 Dec 2023
- critical 9.8 CVSS 3.1 (NVD)
- EPSS 2.08% chance of exploitation in the next 30 days, higher than 81% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Unitronics Vision Series PLCs and HMIs ship with an insecure default password, which if left unchanged, can allow attackers to execute remote commands.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Unitronics VisiLogic | before 9.9.00 | 9.9.00 |
| unitronics visilogic | before 9.9.00 | 9.9.00 |
Exploitation
| In CISA KEV since | 11 Dec 2023 |
|---|---|
| Due date for US federal agencies | 18 Dec 2023 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-1188, CWE-798 |
References
- CVE-2023-6448 on NVD
- CVE-2023-6448 in the CISA KEV catalog
- https://downloads.unitronicsplc.com/Sites/plc/Technical_Library/Unitronics-Cybersecurity-Advisory-2023-001-CVE-2023-6448.pdf (cited by CISA)
- https://downloads.unitronicsplc.com/Sites/plc/Technical_Library/Unitronics-Cybersecurity-Advisory-2023-001-CVE-2023-6448.pdf Vendor Advisory
- https://downloads.unitronicsplc.com/Sites/plc/Visilogic/Version_Changes-Bug_Reports/VisiLogic%209.9.00%20Version%20changes.pdf Release Notes
- https://www.cisa.gov/news-events/alerts/2023/11/28/exploitation-unitronics-plcs-used-water-and-wastewater-systems Third Party Advisory, US Government Resource
- https://www.unitronicsplc.com/cyber_security_vision-samba/ Product
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-6448 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.