CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2023-6448
Critical (9.8) in Unitronics Vision PLC and HMI. In CISA KEV since 2023-12-11. EPSS 2.1% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 2.1% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)
- CISA KEV
- listed 2023-12-11, due 2023-12-18
- CWEs
- CWE-798, CWE-1188
- Published
- Modified
- Record from
- the NVD, synced
Affected
- unitronics:samba_3.5_firmware
- unitronics:samba_4.3_firmware
- unitronics:samba_7_firmware
- unitronics:visilogic
- unitronics:vision1040_firmware
- unitronics:vision120_firmware
- unitronics:vision1210_firmware
- unitronics:vision130_firmware
- unitronics:vision230_firmware
- unitronics:vision280_firmware
- unitronics:vision290_firmware
- unitronics:vision350_firmware
- unitronics:vision430_firmware
- unitronics:vision530_firmware
- unitronics:vision560_firmware
- unitronics:vision570_firmware
- unitronics:vision700_firmware
References
- https://downloads.unitronicsplc.com/Sites/plc/Technical_Library/Unitronics-Cybersecurity-Advisory-2023-001-CVE-2023-6448.pdf
- https://downloads.unitronicsplc.com/Sites/plc/Visilogic/Version_Changes-Bug_Reports/VisiLogic%209.9.00%20Version%20changes.pdf
- https://www.cisa.gov/news-events/alerts/2023/11/28/exploitation-unitronics-plcs-used-water-and-wastewater-systems
- https://www.unitronicsplc.com/cyber_security_vision-samba/
- https://downloads.unitronicsplc.com/Sites/plc/Technical_Library/Unitronics-Cybersecurity-Advisory-2023-001-CVE-2023-6448.pdf