CVE-2020-9307
6.5 · MEDIUMOverview
CVE-2020-9307 is a medium-severity vulnerability affecting belden hirschmann_hios. It was published on February 11, 2021 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
Hirschmann OS2, RSP, and RSPE devices before HiOS 08.3.00 allow a denial of service. An unauthenticated, adjacent attacker can cause an infinite loop on one of the HSR ring ports of the device. This effectively breaks the redundancy of the HSR ring. If the attacker can perform the same attack on a second device, the ring is broken into two parts (thus disrupting communication between devices in the different parts).
Remediation
Check the references section for vendor advisories and patches from belden. Update hirschmann_hios 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 |
|---|---|---|---|
| belden | hirschmann_hios | >= 07.0.04, < 07.1.00 | Affected |
Frequently Asked Questions
What is CVE-2020-9307?
CVE-2020-9307 is a medium-severity vulnerability affecting belden hirschmann_hios. It was published on February 11, 2021 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
How severe is CVE-2020-9307?
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-9307?
Check the references section for vendor advisories and patches from belden. Update hirschmann_hios 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-2020-9307?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-9307 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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