Auth bypass in Siemens Simatic_process_historian_2013

CVE-2021-27395

A vulnerability has been identified in SIMATIC Process Historian 2013 and earlier (All versions), SIMATIC Process Historian 2014 (All versions < SP3 Update 6), SIMATIC Process Historian 2019 (All versions), SIMATIC Process Historian 2020 (…

Vulnerability class: Broken Authentication

EPSS: 0.008 (51.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-27395?
CVE-2021-27395 is a high-severity vulnerability in Siemens Simatic_process_historian_2013, classified under Missing Authentication for Critical Function. CVSS score: 8.1/10. Published 2021-10-12.
How severe is CVE-2021-27395?
High severity. CVSS v3 base score is 8.1 out of 10.