CVE-2020-6986 — HIGH (7.5) — White Hats Nepal

Vulnerability 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 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Omron	Plc Cj1 Firmware	All versions
Omron	Plc Cj1	-
Omron	Plc Cj2 Firmware	All versions
Omron	Plc Cj2	-

Related Weaknesses (CWE)

CWE-400

References

https://www.us-cert.gov/ics/advisories/icsa-20-063-03MitigationThird Party AdvisoryUS Government Resource
https://www.us-cert.gov/ics/advisories/icsa-20-063-03MitigationThird Party AdvisoryUS Government Resource

FAQ

What is CVE-2020-6986?

CVE-2020-6986 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ser...

How severe is CVE-2020-6986?

CVE-2020-6986 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-6986?

Check the references section above for vendor advisories and patch information. Affected products include: Omron Plc Cj1 Firmware, Omron Plc Cj1, Omron Plc Cj2 Firmware, Omron Plc Cj2.