CVE-2021-25746
7.6 · HIGHOverview
CVE-2021-25746 is a high-severity vulnerability affecting kubernetes ingress-nginx. It was published on May 6, 2022 and has a CVSS 3.1 base score of 7.6 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use .metadata.annotations in an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.
Remediation
Check the references section for vendor advisories and patches from kubernetes. Update ingress-nginx 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 | ingress-nginx | >= 0, < 1.2.0 | Affected |
References
Frequently Asked Questions
What is CVE-2021-25746?
CVE-2021-25746 is a high-severity vulnerability affecting kubernetes ingress-nginx. It was published on May 6, 2022 and has a CVSS 3.1 base score of 7.6 (HIGH).
How severe is CVE-2021-25746?
This vulnerability has a CVSS 3.1 base score of 7.6, 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-2021-25746?
Check the references section for vendor advisories and patches from kubernetes. Update ingress-nginx 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-2021-25746?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-25746 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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