CVE-2021-27395

Description

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 (All versions). An interface in the software that is used for critical functionalities lacks authentication, which could allow a malicious user to maliciously insert, modify or delete data.

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.25%
Vendor Advisory siemens.com
Affected: Siemens SIMATIC Process Historian 2013 and earlier
Affected: Siemens SIMATIC Process Historian 2014
Affected: Siemens SIMATIC Process Historian 2019
Affected: Siemens SIMATIC Process Historian 2020
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-766247.pdf vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-27395?
CVE-2021-27395 has been scored as a high severity vulnerability.
How to fix CVE-2021-27395?
To fix CVE-2021-27395, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-27395 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-27395 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-27395?
CVE-2021-27395 affects Siemens SIMATIC Process Historian 2013 and earlier, Siemens SIMATIC Process Historian 2014, Siemens SIMATIC Process Historian 2019, Siemens SIMATIC Process Historian 2020.
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