CVE-2016-8368

mediumpriority · track · 35EPSS 0.026 · 85 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.61% (85th) EPSS

CVSS 5 · medium

Is it mine?

10 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-23

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationQJ71E71-100cisa_csaf_ot
Mitsubishi Electric has released a product revision for newer devices with serial numbers 18072 and later to implement IP filtering for the QJ71E71-100, QJ71E71-B5, and QJ71E71-B2 Ethernet interface modules. Mitsubishi Electric reports that the IP filter function improves access prevention from external sources
MitigationQJ71E71-B2cisa_csaf_ot
Mitsubishi Electric has released a product revision for newer devices with serial numbers 18072 and later to implement IP filtering for the QJ71E71-100, QJ71E71-B5, and QJ71E71-B2 Ethernet interface modules. Mitsubishi Electric reports that the IP filter function improves access prevention from external sources
MitigationQJ71E71-B5cisa_csaf_ot
Mitsubishi Electric has released a product revision for newer devices with serial numbers 18072 and later to implement IP filtering for the QJ71E71-100, QJ71E71-B5, and QJ71E71-B2 Ethernet interface modules. Mitsubishi Electric reports that the IP filter function improves access prevention from external sources

cvss

Technical severity, 0–10. One row per scoring source.

8.6

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–8.6

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 4

v3.08.6highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · CISA US

v3.17.9highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-662USprimaryCWE-412US

affected products (10)

Products and version ranges known to be affected.

Mitsubishi Electric QJ71E71-100: vers:all/*all versionscisa_csaf_otUS
Mitsubishi Electric QJ71E71-B2: vers:all/*all versionscisa_csaf_otUS
Mitsubishi Electric QJ71E71-B5: vers:all/*all versionscisa_csaf_otUS
Mitsubishi Electric QJ71E71-100≤ vers:all/*cisa_csaf_otUS
Mitsubishi Electric QJ71E71-B2≤ vers:all/*cisa_csaf_otUS
Mitsubishi Electric QJ71E71-B5≤ vers:all/*cisa_csaf_otUS
n/a Mitsubishi Electric MELSEC-Q Series Ethernet Interface Module≤ Mitsubishi Electric MELSEC-Q Series Ethernet Interface Moduleenisa_euvdEU
mitsubishielectric qj71e71-100 firmwareall versionsnvdUScpe:2.3:o:mitsubishielectric:qj71e71-100_firmware:*:*:*:*:*:*:*:*
mitsubishielectric qj71e71-b2 firmwareall versionsnvdUScpe:2.3:o:mitsubishielectric:qj71e71-b2_firmware:*:*:*:*:*:*:*:*
mitsubishielectric qj71e71-b5 firmwareall versionsnvdUScpe:2.3:o:mitsubishielectric:qj71e71-b5_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-16-336-03Mitsubishi Electric MELSEC-Q Series Ethernet Interface Module Vulnerabilities2016-09-04icsa · cisa_csaf_otUS
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2017-02-13modified 2026-06-17

related (262)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2020-7457US	high8.1	33.1% (98th)	Exploit	2020-07-09
In FreeBSD 12.1-STABLE before r359565, 12.1-RELEASE before p7, 11.4-STABLE before r362975, 11.4-RELEASE before p1, and 11.3-RELEASE before p11, missing synchronization in the IPV6_…
CVE-2023-0045US	high7.5	2.40% (84th)	Exploit	2023-04-25
The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall. The ib_prctl_set function updates the Thread Information Flags (TIFs) for th…
CVE-2018-15555US	critical9.8	2.97% (87th)	—	2019-06-28
On Telus Actiontec WEB6000Q v1.1.02.22 devices, an attacker can login with root level access with the user "root" and password "admin" by using the enabled onboard UART headers.
CVE-2024-32644US	critical9.1	0.94% (61st)	—	2024-04-19
Evmos is a scalable, high-throughput Proof-of-Stake EVM blockchain that is fully compatible and interoperable with Ethereum. Prior to 17.0.0, there is a way to mint arbitrary token…
CVE-2022-23005US	high8.7	0.81% (57th)	—	2023-01-23
Western Digital has identified a weakness in the UFS standard that could result in a security vulnerability. This vulnerability may exist in some systems where the Host boot ROM co…

+257 more

references (7)

External citations — patches, advisories, analysis.

https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03 cnnvd
https://mitsubishielectric.com/Patchcnnvd
https://www.securityfocus.com/bid/94632 cnnvd
http://www.securityfocus.com/bid/94632 enisa_euvd
https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03 enisa_euvd
http://www.securityfocus.com/bid/94632Third Party AdvisoryVDB Entrynvd
https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03MitigationThird Party AdvisoryUS Government Resourcenvd

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan