CVE-2026-24015: Apache IoTDB Security Vulnerability

CVE-2026-24015 Overview

A critical vulnerability has been identified in Apache IoTDB, the popular open-source time series database optimized for Internet of Things (IoT) scenarios. This vulnerability affects Apache IoTDB versions from 1.0.0 before 1.3.7 and from 2.0.0 before 2.0.7, potentially exposing affected systems to significant security risks.

Critical Impact

This vulnerability in Apache IoTDB can be exploited remotely without authentication, potentially allowing attackers to compromise the confidentiality, integrity, and availability of affected systems.

Affected Products

• Apache IoTDB versions 1.0.0 through 1.3.6
• Apache IoTDB versions 2.0.0 through 2.0.6
• All deployments using unpatched Apache IoTDB in production environments

Discovery Timeline

• March 9, 2026 - CVE-2026-24015 published to NVD
• March 10, 2026 - Last updated in NVD database

Technical Details for CVE-2026-24015

Vulnerability Analysis

CVE-2026-24015 is classified under CWE-1327, which relates to binding to an unrestricted IP address. This vulnerability type occurs when a service binds to all network interfaces (0.0.0.0) rather than a specific interface, potentially exposing the service to unintended network segments. In the context of Apache IoTDB, this could allow remote attackers to access the database service from any network interface without proper access controls.

The vulnerability can be exploited remotely over the network, requires no user interaction, and does not necessitate any prior authentication or privileges. This makes it particularly dangerous for IoTDB deployments that are accessible from untrusted networks.

Root Cause

The root cause of this vulnerability stems from improper network binding configuration in Apache IoTDB. When the service binds to an unrestricted IP address, it inadvertently exposes the database interface to all network segments rather than limiting access to specific trusted interfaces. This configuration oversight can allow unauthorized remote access to the IoTDB service, bypassing intended network segmentation and access controls.

Attack Vector

The attack vector for CVE-2026-24015 is network-based, meaning exploitation occurs remotely without requiring local system access. An attacker with network visibility to an affected Apache IoTDB instance can potentially:

1. Connect to the database service from any network interface
2. Bypass network segmentation controls that were intended to restrict access
3. Potentially compromise data confidentiality, integrity, and availability

The vulnerability does not require complex exploitation techniques, user interaction, or authentication, making it accessible to attackers with basic network access to the target system.

Detection Methods for CVE-2026-24015

Indicators of Compromise

• Unexpected inbound connections to Apache IoTDB service ports from external or untrusted network segments
• Unusual database query patterns or access attempts from unfamiliar IP addresses
• Network traffic to IoTDB ports (default: 6667 for RPC, 8181 for web interface) from non-whitelisted sources
• Authentication failures or access denials logged from unexpected network ranges

Detection Strategies

• Monitor network connections to Apache IoTDB service ports for traffic originating from untrusted network segments
• Implement network intrusion detection rules to alert on connections to IoTDB from unauthorized IP ranges
• Review Apache IoTDB access logs for connection attempts from unexpected source addresses
• Deploy endpoint detection solutions to monitor for suspicious process behaviors associated with IoTDB exploitation

Monitoring Recommendations

• Configure centralized logging for all Apache IoTDB instances to capture connection metadata and query activity
• Establish baseline network behavior for IoTDB deployments and alert on deviations
• Implement real-time alerting for connections from external networks to internal IoTDB services
• Regularly audit network configuration to ensure IoTDB services are bound to appropriate interfaces

How to Mitigate CVE-2026-24015

Immediate Actions Required

• Upgrade Apache IoTDB to version 1.3.7 (for 1.x deployments) or 2.0.7 (for 2.x deployments) immediately
• Review and restrict network binding configuration to specific trusted interfaces only
• Implement network-level access controls (firewalls, security groups) to limit IoTDB access to authorized networks
• Audit existing deployments to identify any instances running vulnerable versions

Patch Information

Apache has released patched versions that address this vulnerability. Users running affected versions should upgrade to the following fixed releases:

• For Apache IoTDB 1.x series: Upgrade to version 1.3.7 or later
• For Apache IoTDB 2.x series: Upgrade to version 2.0.7 or later

For additional details, refer to the Apache Security Thread and the Open Wall OSS Security Post.

Workarounds

• Configure firewall rules to restrict access to Apache IoTDB ports only from trusted IP addresses and network segments
• Modify IoTDB configuration to bind services to specific internal interfaces rather than all interfaces (0.0.0.0)
• Deploy IoTDB instances behind a reverse proxy or VPN to add an additional layer of access control
• Implement network segmentation to isolate IoTDB services from untrusted network zones

# Configuration example - Restrict IoTDB network access via iptables
# Allow connections only from trusted subnet (e.g., 10.0.1.0/24)
iptables -A INPUT -p tcp --dport 6667 -s 10.0.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 6667 -j DROP
iptables -A INPUT -p tcp --dport 8181 -s 10.0.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 8181 -j DROP