Five vulnerabilities have been discovered within the Ingress NGINX Controller for Kubernetes. NGINX Ingress Controller is a tool used in Kubernetes environments to manage and route external traffic to services within the cluster.
Ingress Controller acts as a reverse proxy and load balancer, supporting various protocols like WebSocket, gRPC, TCP, and UDP, and also provides features such as content-based routing and TLS/SSL termination. CVE-2025-1974 – ingress-nginx admission controller RCE escalation CVE-2025-1974 is a critical ‘improper isolation or compartmentalisation’ vulnerability with a CVSSv3 score of 9.8. An unauthenticated attacker with access to the pod network could execute arbitrary code within the ingress-nginx controller.
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Source: NHS Digital
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