CVE-2025-55017: Apache IoTDB Critical Path Traversal Vulnerability

Overview

A critical path traversal vulnerability has been disclosed in Apache IoTDB, tracked as CVE-2025-55017 with a CVSS v3.1 score of 9.1 (Critical). The flaw allows an attacker to read or write files outside the intended directory, potentially exposing sensitive configuration data, credentials, or enabling remote code execution depending on the deployment context.

Vulnerability Details

Technical Analysis

What Is Apache IoTDB?

Apache IoTDB (Internet of Things Database) is an open-source time-series database designed for IoT data management. It is widely deployed in industrial control systems, smart manufacturing, energy management, and operational technology (OT) environments where large volumes of sensor data must be stored and queried efficiently.

The Vulnerability

The flaw stems from improper limitation of a pathname to a restricted directory — a classic CWE-22 path traversal condition. When user-controlled input is used to construct file paths, the application fails to sanitize sequences such as ../ (dot-dot-slash), enabling an attacker to:

1. Navigate outside the intended base directory using relative path sequences
2. Access arbitrary files on the underlying file system
3. Potentially write files to unauthorized locations depending on the component and permissions

Attack Scenarios

In a typical IoT/ICS deployment, successful exploitation could allow an attacker to:

• Read configuration files containing database credentials, API keys, or connection strings
• Access IoTDB data files containing sensitive operational or sensor data
• Overwrite critical files if write operations are exposed through the traversal path
• Pivot to broader compromise by extracting credentials used by other systems

Affected Deployments

IoTDB is commonly deployed in:

• Smart grid and energy management systems — real-time metering and telemetry
• Industrial IoT (IIoT) — factory floor sensor aggregation
• Transportation telemetry — fleet tracking and logistics
• Building management systems — HVAC, lighting, access control sensors

Organizations running IoTDB in OT/ICS environments should treat this vulnerability as high priority, as compromise of time-series infrastructure can undermine situational awareness and operational integrity.

Remediation

Immediate Action Required

Upgrade to a patched release as soon as possible:

Download patched releases from the Apache IoTDB releases page.

Mitigation if Immediate Patching Is Not Possible

If upgrading immediately is not feasible:

1. Restrict network access — Place IoTDB behind a firewall and limit access to trusted IP ranges only. Never expose IoTDB directly to the internet.
2. Audit file system permissions — Ensure the IoTDB service account has minimal OS-level privileges. Restrict write access to only the directories IoTDB requires.
3. Enable logging and monitoring — Monitor access logs for unusual path patterns (e.g., sequences containing ..).
4. Isolate ICS/OT networks — Apply network segmentation to prevent lateral movement if a host running IoTDB is compromised.

Detection

Log-Based Indicators

Look for HTTP or RPC requests containing path traversal sequences in IoTDB server logs:

../
..\
%2e%2e%2f
%2e%2e/
..%2f

File System Monitoring

Configure file integrity monitoring (FIM) or an EDR agent to alert on unexpected file reads or writes outside the IoTDB data directory.

Timeline

Recommendations

• Identify all IoTDB instances in your environment (check both 1.x and 2.x deployments)
• Upgrade immediately to IoTDB 1.3.6 or 2.0.6
• Review network exposure — IoTDB should never be internet-facing
• Audit service account permissions on all IoTDB hosts
• Monitor for traversal patterns in request logs

Sources

• NVD — CVE-2025-55017
• Apache IoTDB Security Announcements

Related Advisories

• CVE-2025-64152: Apache IoTDB Path Traversal (CVSS 9.1)