What is CVE-2018-5459?

CVE-2018-5459 is a critical-severity vulnerability in Wago 750-8202, classified under Improper Authentication. CVSS score: 9.8/10. Published 2018-02-13.

How severe is CVE-2018-5459?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Wago 750-8202

CVE-2018-5459

An Improper Authentication issue was discovered in WAGO PFC200 Series 3S CoDeSys Runtime versions 2.3.X and 2.4.X. An attacker can execute different unauthenticated remote operations because of the CoDeSys Runtime application, which is available via network by default on Port 2455. An attacker could execute some unauthenticated commands such as reading, writing, or deleting arbitrary files, or manipulate the PLC application during runtime by sending specially-crafted TCP packets to Port 2455.

Vulnerability class: Broken Authentication

EPSS: 0.027 (84.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

ics-cert@hq.dhs.gov (US Government Resource, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-5459?: CVE-2018-5459 is a critical-severity vulnerability in Wago 750-8202, classified under Improper Authentication. CVSS score: 9.8/10. Published 2018-02-13.
How severe is CVE-2018-5459?: Critical severity. CVSS v3 base score is 9.8 out of 10.