CVE-2016-8370

Name: CVE-2016-8370
Creator: NVD / NIST
Published: 2017-02-13T21:59:01.22+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.31%

Last modified Jun 17, 2026

CVE-2016-8370 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. Weakly encrypted passwords are transmitted to a MELSEC-Q PLC.. EPSS estimates a 1.31% chance of exploitation in the next 30 days.

Description

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. Weakly encrypted passwords are transmitted to a MELSEC-Q PLC.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.31%

67.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-327

Affected Software

Vendor	Product	Versions
Mitsubishielectric	Qj71e71-100 Firmware	All versions
Mitsubishielectric	Qj71e71-B5 Firmware	All versions
Mitsubishielectric	Qj71e71-B2 Firmware	All versions

References

http://www.securityfocus.com/bid/94632Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03Mitigation, Third Party Advisory, US Government Resource
http://www.securityfocus.com/bid/94632Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03Mitigation, Third Party Advisory, US Government Resource

Timeline

Published: Feb 13, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-8370?

How severe is CVE-2016-8370?

CVE-2016-8370 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.31% probability of exploitation in the next 30 days.

How do I fix CVE-2016-8370?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-8370?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST