CVE-2021-37172
7.5 · HIGHOverview
CVE-2021-37172 is a high-severity vulnerability affecting siemens simatic_s7-1200_cpu_firmware. It was published on August 10, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (V4.5.0). Affected devices fail to authenticate against configured passwords when provisioned using TIA Portal V13. This could allow an attacker using TIA Portal V13 or later versions to bypass authentication and download arbitrary programs to the PLC. The vulnerability does not occur when TIA Portal V13 SP1 or any later version was used to provision the device.
Remediation
Check the references section for vendor advisories and patches from siemens. Update simatic_s7-1200_cpu_firmware 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 |
|---|---|---|---|
| siemens | simatic_step_7_\(tia_portal\) | 0 | Affected |
Frequently Asked Questions
What is CVE-2021-37172?
CVE-2021-37172 is a high-severity vulnerability affecting siemens simatic_s7-1200_cpu_firmware. It was published on August 10, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-37172?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-37172?
Check the references section for vendor advisories and patches from siemens. Update simatic_s7-1200_cpu_firmware 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-2021-37172?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-37172 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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