Denial of Service in IBM DataPower Gateway due to NULL Pointer Dereference

Executive Summary

This vulnerability is a denial of service issue in IBM DataPower Gateway versions 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, 10.6.0.0 through 10.6.0.10, and 11.0.0.0 through 11.0.0.2. It occurs due to a NULL pointer dereference when processing GraphQL variables, which could allow an attacker to crash the system.

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Detection Guidance

Detection requires checking IBM DataPower Gateway versions affected by CVE-2026-16182. Run version checks on DataPower appliances using CLI commands like 'show version' or 'show system' to identify versions 10.5.0.0-10.5.0.22, 10.6.1-10.6.6, 10.6.0.0-10.6.0.10, or 11.0.0.0-11.0.0.2.

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Impact Analysis

An attacker could exploit this vulnerability to cause a denial of service, making the IBM DataPower Gateway unavailable. This could disrupt services relying on the gateway for processing requests, leading to downtime and potential loss of functionality.

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Compliance Impact

This vulnerability causes a denial of service due to a NULL pointer dereference in GraphQL variable processing, which could disrupt services handling sensitive data. While not directly violating GDPR or HIPAA, such disruptions may lead to unauthorized access or data processing interruptions, potentially violating compliance requirements for availability and security.

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Mitigation Strategies

Apply the latest IBM DataPower Gateway patches or updates to versions beyond the affected ranges (10.5.0.22, 10.6.6, 10.6.0.10, 11.0.0.2). Disable GraphQL variable processing if not required. Monitor IBM security advisories for updates.

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