VulnerabilityModified
CVE-2020-6986
In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets within a short period, causing a service error on the PLC Ethernet module, which in turn causes a PLC service denied result.
HIGH 7.5EPSS 1.56%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.56%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets within a short period, causing a service error on the PLC Ethernet module, which in turn causes a PLC service denied result.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.56% probability · 74th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- omron/plc cj1 firmware · omron/plc cj2 firmware
- Source
- ics-cert@hq.dhs.gov
References
- https://www.us-cert.gov/ics/advisories/icsa-20-063-03Mitigation, Third Party Advisory, US Government Resource
- https://www.us-cert.gov/ics/advisories/icsa-20-063-03Mitigation, Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.