CVE-2016-8368

moderate-risk
Published 2017-02-13

An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-100, all versions, QJ71E71-B5, all versions, and QJ71E71-B2, all versions. The affected Ethernet interface module is connected to a MELSEC-Q PLC, which may allow a remote attacker to connect to the PLC via Port 5002/TCP and cause a denial of service, requiring the PLC to be reset to resume operation. This is caused by an Unrestricted Externally Accessible Lock.

Do I need to act?

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0.88% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.6/10 High
NETWORK / LOW complexity

Affected Products (3)

Qj71E71-100 Firmware
Qj71E71-B5 Firmware
Qj71E71-B2 Firmware

Affected Vendors

Mitsubishielectric

References (4)

Third Party Advisory http://www.securityfocus.com/bid/94632
Mitigation https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03
Third Party Advisory http://www.securityfocus.com/bid/94632
Mitigation https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03
41
/ 100
moderate-risk
Severity 29/34 · Critical
Exploitability 3/34 · Minimal
Exposure 9/34 · Low