External risk intelligence

Apache IoTDB Path Traversal Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.1)

CVE-2025-55017

Apache IoTDB is a database system for time-series data. While such databases are frequently deployed within internal networks or private environments to support industrial or sensor data collection, they may be exposed to the internet in specific cloud-hosted or managed service deployments. Public exposure is not the default or standard design for this type of backend infrastructure.

Path Traversal

Halo Surface Signal: 3 out of 5 — possibly public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A path traversal vulnerability has been identified in Apache IoTDB, a time-series database system. This issue could allow unauthorized access to restricted directories, potentially impacting the integrity and confidentiality of data. The main concern is confirming relevance and exposure to our environments.

Access issues in Apache IoTDB software.
Understand potential data access risks.
Confirm relevance and exposure to our systems.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending specially crafted requests to an exposed Apache IoTDB instance, as the system improperly restricts pathnames. This allows an attacker to traverse directories, potentially leading to unauthorized access and modification of sensitive data.

Entry condition: Exposed Apache IoTDB instance.
Trigger point: Specially crafted path traversal requests.
Resulting risk: Unauthorized data access and modification.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability in Apache IoTDB could allow an unauthenticated attacker to read or modify files on the system by providing specially crafted input. This could occur when the affected service is exposed externally and the system's file structure is not properly restricted.

System files may be accessed.
Path traversal allows file access.
Unauthorized data access or modification.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in Apache IoTDB likely falls under the responsibility of platform or infrastructure teams managing the database, with potential involvement from application owners who depend on it. The first practical step is to identify all instances of Apache IoTDB, determine their exposure and criticality, and confirm the accountable owner for each. A risk-based remediation plan should then be developed, prioritizing critical and exposed systems.

Platform or application owners should lead.
Verify instance reachability and criticality.
Plan remediation based on identified risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is Apache IoTDB?

Apache IoTDB is a specialized database system designed to store and process time-series data. It is widely used in industrial settings and IoT ecosystems to manage large volumes of sensor data efficiently, supporting high-speed data ingestion and complex analytical queries for monitoring physical systems.

How does CVE-2025-55017 cause a path traversal error?

This vulnerability is classified as Improper Limitation of a Pathname to a Restricted Directory, or CWE-22. It happens when the software fails to properly filter user-supplied input that represents file paths. Because of this, an attacker can manipulate input to escape the intended directory, gaining the ability to read or modify files that should remain protected and restricted from external view.

Do I need an exposed instance to be vulnerable?

Yes, successful exploitation requires the system to be reachable, typically via a network. The vulnerability is triggered when an attacker sends specially crafted requests to the software. If the database is completely isolated from the network or restricted by robust firewall rules that block untrusted traffic, the ability for an attacker to reach the affected component and submit these malicious paths is significantly reduced.

Is my Apache IoTDB deployment at risk?

Halo Surface Signal notes that while Apache IoTDB is primarily used within internal networks for industrial or sensor data, internet-facing deployments exist, especially in cloud-hosted or managed services. You should assess if your specific instances are accessible over the internet or if they are segmented within private backend infrastructure to determine your actual risk level.

When should I upgrade to fix CVE-2025-55017?

You should prioritize upgrading as soon as possible if you are running affected versions (1.0.0 through 1.3.5 or 2.0.0 through 2.0.5). Your first steps are to inventory your current installations, identify which are reachable by untrusted users, and verify who is responsible for maintaining those systems to ensure the transition to version 1.3.6 or 2.0.6 is completed securely.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.