CVE-2021-25737
2.7 · LOWOverview
CVE-2021-25737 is a low-severity vulnerability affecting kubernetes kubernetes. It was published on September 6, 2021 and has a CVSS 3.1 base score of 2.7 (LOW).
This vulnerability has a CVSS 3.1 base score of 2.7, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.
Remediation
Check the references section for vendor advisories and patches from kubernetes. Update kubernetes 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 |
|---|---|---|---|
| kubernetes | kubernetes | >= 1.16.0, < 1.18.19 | Affected |
References
Frequently Asked Questions
What is CVE-2021-25737?
CVE-2021-25737 is a low-severity vulnerability affecting kubernetes kubernetes. It was published on September 6, 2021 and has a CVSS 3.1 base score of 2.7 (LOW).
How severe is CVE-2021-25737?
This vulnerability has a CVSS 3.1 base score of 2.7, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-25737?
Check the references section for vendor advisories and patches from kubernetes. Update kubernetes 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-2021-25737?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-25737 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.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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