CVE-2026-86124 in AutoAgent
Summary
by MITRE • 09/05/2026
AutoAgent contains an unauthenticated remote code execution vulnerability in the TCP server that binds to all interfaces and executes attacker-supplied commands as root. Attackers can connect to the exposed communication port and execute arbitrary bash commands within the container, gaining access to bind-mounted host workspace directories.
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Analysis
by VulDB Data Team • 09/05/2026
The AutoAgent application contains a critical unauthenticated remote code execution vulnerability stemming from its TCP server implementation which binds to all network interfaces without implementing any form of authentication or authorization checks. This architectural flaw allows external actors to establish direct connections to the exposed communication port and inject arbitrary commands that are executed with root privileges within the container environment. The severity of this issue is compounded by the fact that the service listens on zero point zero zero zero, making it accessible from any network interface including public-facing ones if not properly isolated by host-level firewalls or network policies.
From a technical perspective, the vulnerability represents a classic case of insufficient input validation and lack of access control mechanisms in network services. When an attacker connects to the TCP port they can supply malicious payloads that are interpreted as valid bash commands by the underlying execution engine. Since these commands run with root privileges inside the container, attackers gain full administrative control over the application environment. This capability extends beyond simple command execution to include reading sensitive configuration files modifying system settings installing persistent backdoors and exfiltrating data stored within the container filesystem.
The operational impact of this vulnerability is severe due to its potential for lateral movement and host compromise through bind-mounted volumes. Many containerized deployments utilize volume mounts to share directories between the host operating system and the guest container for purposes such as shared workspace access or persistent storage configuration. When an attacker executes commands within a privileged context that has access to these mounted paths they can read write or delete files on the underlying host filesystem effectively breaking out of the container isolation boundary. This allows them to manipulate critical system configurations steal credentials stored in home directories compromise other services running on the same host and potentially pivot into internal network segments depending on the host's network configuration.
This vulnerability aligns with CWE-78 Improper Neutralization of Special Elements used in an OS Command commonly known as OS command injection where untrusted data is passed to a system shell without proper sanitization. Additionally it relates to CWE-284 Improper Access Control because the service fails to verify the identity or permissions of connecting clients before executing requested operations. In terms of adversary behavior this maps directly to ATT&CK technique T1059 Command and Scripting Interpreter specifically bash scripting which attackers use to automate exploitation and maintain persistence within compromised environments. The ability to execute commands as root also corresponds to privilege escalation patterns observed in container escape scenarios where weak isolation boundaries are exploited for elevated access.
Mitigation strategies must address both the immediate exposure risk and the underlying architectural weaknesses. Immediately restrict network accessibility by configuring host firewalls or Kubernetes Network Policies to limit TCP port access to only trusted internal IP ranges rather than binding to all interfaces. Implement strong authentication mechanisms such as TLS mutual authentication or token-based verification before allowing any command execution requests. Apply principle of least privilege by running the AutoAgent service under a non-root user account with minimal filesystem permissions even if it must interact with bind-mounted directories use read-only mounts where possible and restrict write access to specific subdirectories only. Regularly audit container runtime configurations for dangerous capabilities such as SYS_ADMIN or NET_RAW that might facilitate escape attempts and ensure that security contexts are properly defined in deployment manifests. Finally conduct thorough code reviews focusing on input validation logic and consider adopting static analysis tools specifically designed to detect command injection vulnerabilities during the development lifecycle.