VulnerabilityModified
CVE-2020-7491
**VERSION NOT SUPPORTED WHEN ASSIGNED** A legacy debug port account in TCMs installed in Tricon system versions 10.2.0 through 10.5.3 is visible on the network and could allow inappropriate access.
HIGH 7.5EPSS 1.31%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
**VERSION NOT SUPPORTED WHEN ASSIGNED** A legacy debug port account in TCMs installed in Tricon system versions 10.2.0 through 10.5.3 is visible on the network and could allow inappropriate access. This vulnerability was remediated in TCM version 10.5.4.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.31% probability · 69th percentile
- CISA KEV
- Not listed
- Affected
- schneider-electric/tricon tcm 4351 firmware · schneider-electric/tricon tcm 4352 firmware · schneider-electric/tricon tcm 4351a firmware · schneider-electric/tricon tcm 4351b firmware · schneider-electric/tricon tcm 4352a firmware · schneider-electric/tricon tcm 4352b firmware · schneider-electric/tristation 1131 firmware
- Source
- cybersecurity@se.com
References
- https://us-cert.cisa.gov/ics/advisories/icsa-20-205-01Third Party Advisory, US Government Resource
- https://www.se.com/ww/en/download/document/SESB-2020-105-01/Vendor Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-20-205-01Third Party Advisory, US Government Resource
- https://www.se.com/ww/en/download/document/SESB-2020-105-01/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.