CVE-2025-65854: Mineadmin RCE Vulnerability

CVE-2025-65854 Overview

CVE-2025-65854 is a critical code injection vulnerability affecting MineAdmin v3.x. The vulnerability stems from insecure permissions in the scheduled tasks feature, which allows attackers to execute arbitrary commands on the target system and achieve full account takeover. This flaw enables remote, unauthenticated attackers to gain complete control over affected MineAdmin installations.

Critical Impact

Attackers can execute arbitrary commands and perform full account takeover through the scheduled tasks feature, potentially compromising the entire MineAdmin system and underlying infrastructure.

Affected Products

• MineAdmin v3.x (all versions in the 3.x branch)
• MineAdmin scheduled tasks feature components

Discovery Timeline

• 2025-12-12 - CVE-2025-65854 published to NVD
• 2025-12-19 - Last updated in NVD database

Technical Details for CVE-2025-65854

Vulnerability Analysis

This vulnerability is classified under CWE-94 (Improper Control of Generation of Code), commonly referred to as Code Injection. The scheduled tasks feature in MineAdmin v3.x fails to properly validate and sanitize user-supplied input before processing it for task execution. This architectural weakness allows attackers to inject and execute arbitrary commands on the underlying system.

The attack requires no privileges or user interaction, making it particularly dangerous for internet-facing MineAdmin deployments. Once exploited, an attacker can leverage the command execution capability to escalate privileges, exfiltrate sensitive data, install backdoors, or pivot to other systems within the network.

Root Cause

The root cause of CVE-2025-65854 lies in improper access control and input validation within the scheduled tasks functionality. The application fails to implement adequate permission checks, allowing unauthorized users to create or modify scheduled tasks. Additionally, the task execution engine does not properly sanitize input parameters, enabling code injection attacks.

Attack Vector

The vulnerability is exploitable over the network without requiring authentication or user interaction. An attacker can craft malicious requests to the scheduled tasks endpoint, injecting arbitrary commands that will be executed by the MineAdmin server. The attack flow typically involves:

1. Identifying a vulnerable MineAdmin v3.x instance
2. Crafting a malicious scheduled task payload containing injected commands
3. Submitting the payload to the scheduled tasks feature
4. Waiting for the scheduled task to execute or triggering immediate execution
5. Gaining command execution on the target system

A proof-of-concept demonstrating this vulnerability has been documented. For technical details, refer to the GitHub Gist PoC published by the security researcher.

Detection Methods for CVE-2025-65854

Indicators of Compromise

• Unexpected or unauthorized scheduled tasks appearing in the MineAdmin configuration
• Suspicious command patterns in scheduled task definitions containing shell commands or script execution
• Unusual outbound network connections originating from the MineAdmin server process
• New user accounts or privilege modifications not initiated by administrators
• Log entries showing scheduled task creation or modification from unknown IP addresses

Detection Strategies

• Monitor MineAdmin scheduled tasks configuration for unauthorized modifications or suspicious command patterns
• Implement web application firewall (WAF) rules to detect and block malicious payloads targeting the scheduled tasks endpoint
• Enable verbose logging on the MineAdmin application and review logs for anomalous scheduled task activity
• Deploy endpoint detection and response (EDR) solutions to identify command execution originating from the MineAdmin process

Monitoring Recommendations

• Configure alerts for any new scheduled task creation events in MineAdmin
• Monitor system process trees for unexpected child processes spawned by MineAdmin
• Implement network monitoring to detect command-and-control communications from compromised servers
• Review authentication logs for failed or suspicious login attempts targeting MineAdmin

How to Mitigate CVE-2025-65854

Immediate Actions Required

• Restrict network access to MineAdmin instances using firewall rules to limit exposure to trusted networks only
• Disable the scheduled tasks feature if not required for business operations
• Review and remove any suspicious scheduled tasks currently configured in the system
• Implement strong authentication and authorization controls for all MineAdmin administrative functions
• Consider deploying a web application firewall (WAF) in front of MineAdmin to filter malicious requests

Patch Information

Organizations should monitor the MineAdmin official website for security updates and patches addressing this vulnerability. Until an official patch is released, implementing the workarounds and mitigations described below is strongly recommended.

Workarounds

• Disable the scheduled tasks feature entirely if it is not essential for operations
• Place MineAdmin behind a reverse proxy with strict access controls and input filtering
• Implement IP-based access restrictions to limit administrative access to trusted networks
• Enable comprehensive logging and monitoring for all scheduled task operations
• Consider upgrading to the latest available version and verifying if the vulnerability has been addressed

# Example: Restrict access to MineAdmin using iptables
# Allow access only from trusted management network
iptables -A INPUT -p tcp --dport 80 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP