CVE-2021-27395
8.1 · HIGHOverview
CVE-2021-27395 is a high-severity vulnerability affecting siemens simatic_process_historian_2013. It was published on October 12, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from siemens. Update simatic_process_historian_2013 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|
Frequently Asked Questions
What is CVE-2021-27395?
CVE-2021-27395 is a high-severity vulnerability affecting siemens simatic_process_historian_2013. It was published on October 12, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2021-27395?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-27395?
Check the references section for vendor advisories and patches from siemens. Update simatic_process_historian_2013 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-27395?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-27395 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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