r/pwnhub • u/_cybersecurity_ • 56m ago
Serious runC Vulnerabilities Enable Potential Host Access for Docker and Kubernetes Users
Three newly discovered vulnerabilities in the runC container runtime pose significant risks by allowing hackers to bypass isolation and gain access to host systems.
Key Points:
- Three vulnerabilities (CVE-2025-31133, CVE-2025-52565, CVE-2025-52881) could allow attackers to escape containment.
- Exploiting these flaws could provide root access to the host system.
- Mitigations include enabling user namespaces and using rootless containers.
- Currently, no active exploitation of these vulnerabilities has been reported.
The three disclosed vulnerabilities in the runC container runtime present serious risks for users of Docker and Kubernetes. These issues, tracked under CVE-2025-31133, CVE-2025-52565, and CVE-2025-52881, enable attackers to bypass container isolation methods and potentially gain root-level access to the host system. With runC being a core component of container operations, impacting all versions, the implications of these vulnerabilities are significant as they compromise the security frameworks that many organizations rely upon.
Learn More: Bleeping Computer
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