CVE-2017-16743

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

An Improper Authorization issue was discovered in PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, and 48xxx Series products running firmware Version 1.0 to 1.32. A remote unauthenticated attacker may be able to craft special HTTP requests allowing an attacker to bypass web-service authentication allowing the attacker to obtain administrative privileges on the device.

Metrics

CVSS 3.0 9.8/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-285 CWE-863

Affected software

Vendor	Product	Versions
n/a	PHOENIX CONTACT FL SWITCH	PHOENIX CONTACT FL SWITCH

References

https://cert.vde.com/en-us/advisories/vde-2017-006
https://ics-cert.us-cert.gov/advisories/ICSA-18-011-03Patch, Third Party Advisory, US Government Resource
https://cert.vde.com/en-us/advisories/vde-2017-006
https://ics-cert.us-cert.gov/advisories/ICSA-18-011-03Patch, Third Party Advisory, US Government Resource

Timeline

Published: Jan 12, 2018
Last modified: Jun 17, 2026
NVD status: Modified

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