CVE-2025-1974

critical

Description

A security issue was discovered in Kubernetes where under certain conditions, an unauthenticated attacker with access to the pod network can achieve arbitrary code execution in the context of the ingress-nginx controller. This can lead to disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)

From the Tenable Blog

CVE-2025-1097, CVE-2025-1098, CVE-2025-1974, CVE-2025-24513, CVE-2025-24514: Frequently Asked Questions About IngressNightmare

Published: 2025-03-25

Frequently asked questions about five vulnerabilities in the Ingress NGINX Controller for Kubernetes, collectively known as IngressNightmare.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-25-100-05

https://www.securityweek.com/ingressnightmare-flaws-expose-many-kubernetes-clusters-to-remote-hacking/

https://www.theregister.com/2025/03/25/kubernetes_flaw_rce_risk/

https://www.darkreading.com/application-security/critical-ingressnightmare-vulns-kubernetes-environments

https://thehackernews.com/2025/03/critical-ingress-nginx-controller.html

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-1974

https://cloud.google.com/support/bulletins/index#gcp-2025-013

https://aws.amazon.com/security/security-bulletins/AWS-2025-006/

https://www.tenable.com/blog/cve-2025-1974-frequently-asked-questions-about-ingressnightmare-kubernetes

https://security.netapp.com/advisory/ntap-20250328-0008/

https://github.com/kubernetes/kubernetes/issues/131009

https://github.com/B1ack4sh/Blackash-CVE-2025-1974

Details

Source: Mitre, NVD

Published: 2025-03-25

Updated: 2025-11-10

Named Vulnerability: IngressNightmare

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.90653

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability Being Monitored

Detections

Analytics