CVE-2021-25740
LOWCVSS 3.1/10EPSS 1.81%
Last modified
CVE-2021-25740 is a low-severity vulnerability rated 3.1/10 on the CVSS scale. A security issue was discovered with Kubernetes that could enable users to send network traffic to locations they would otherwise not have access to via a confused deputy attack.. EPSS estimates a 1.81% chance of exploitation in the next 30 days.
Description
A security issue was discovered with Kubernetes that could enable users to send network traffic to locations they would otherwise not have access to via a confused deputy attack.
Metrics
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Kubernetes | Kubernetes | All versions |
References
- https://github.com/kubernetes/kubernetes/issues/103675Mitigation, Third Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/WYE9ptrhSLEMailing List, Mitigation, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211014-0001/Third Party Advisory
- https://github.com/kubernetes/kubernetes/issues/103675Mitigation, Third Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/WYE9ptrhSLEMailing List, Mitigation, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211014-0001/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-25740?
A security issue was discovered with Kubernetes that could enable users to send network traffic to locations they would otherwise not have access to via a confused deputy attack.
How severe is CVE-2021-25740?
CVE-2021-25740 has a CVSS score of 3.1/10 (LOW severity). The EPSS model estimates a 1.81% probability of exploitation in the next 30 days.
How do I fix CVE-2021-25740?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-25740?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST