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Vulnerability record · CVE-2016-8366 · published 5 April 2018

CVE-2016-8366: Phoenixcontact ilc plcs firmware cleartext storage of sensitive data vulnerability

Phoenixcontact · Ilc Plcs Firmware

Webvisit in Phoenix Contact ILC PLCs offers a password macro to protect HMI pages on the PLC against casual or coincidental opening of HMI pages by the user. The password macro can be configured in a way that the password is stored and transferred in clear text.

7.3 CVSS 3.0 High EPSS 5.7% · top 7.3% CWE-312 · Cleartext storage of sensitive dataCWE-255 · CWE-255
7.3CVSS 3.0 base score, v2 5.0
5.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Webvisit in Phoenix Contact ILC PLCs offers a password macro to protect HMI pages on the PLC against casual or coincidental opening of HMI pages by the user. The password macro can be configured in a way that the password is stored and transferred in clear text.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/94163 Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-313-01 Third Party AdvisoryUS Government Resource
https://www.exploit-db.com/exploits/45586/
http://www.securityfocus.com/bid/94163 Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-313-01 Third Party AdvisoryUS Government Resource
https://www.exploit-db.com/exploits/45586/

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.3CVE-2016-8371Phoenixcontact ilc plcs firmware improper authentication vulnerabilityThe web server in Phoenix Contact ILC PLCs can be accessed without authenticating even if the authentication mechanism is enabled.EPSS 11%7.3CVE-2016-8380Phoenixcontact ilc plcs firmware improper authentication vulnerabilityThe web server in Phoenix Contact ILC PLCs allows access to read and write PLC variables without authentication.EPSS 11%5.7CVE-2011-4723D-Link DIR-300 router stores passwords in cleartextThe D-Link DIR-300 router stores passwords in cleartext rather than in a protected form. Anyone who can reach the stored data can read credentials di…KEVEPSS 3.1%analysed

Source: NIST National Vulnerability Database (record CVE-2016-8366), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.