External risk intelligence

IBM DataPower Gateway Heap Buffer Overflow Allows Code Execution.

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-14888

IBM DataPower Gateway is an appliance specifically designed to serve as an internet-facing gateway, API proxy, and security edge device. By its nature and primary function, it is typically deployed at the network perimeter to handle traffic from the public internet, making it a highly exposed surface.

Halo Surface Signal: 5 out of 5 — more likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in IBM DataPower Gateway, potentially allowing attackers to execute code remotely. This impacts systems acting as network gateways and security perimeters, necessitating a review of affected assets.

  • Remote code execution risk identified.
  • Protects critical network edge capabilities.
  • Confirm exposure and relevance to operations.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending specially crafted network requests to an exposed IBM DataPower Gateway. This could allow them to trigger a heap-based buffer overflow, potentially leading to the execution of arbitrary code on the affected system.

  • No special access required.
  • Triggered via network requests.
  • Risk of arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow a remote attacker to execute arbitrary code on an affected system, potentially impacting its services and data.

  • System data and service behavior.
  • Via network, unauthenticated.
  • Complete system compromise is possible.

Operational Fix

Recommended remediation, mitigation, and detection steps

Given that IBM DataPower Gateway is typically deployed at the network perimeter as an internet-facing gateway, platform or infrastructure teams likely manage its operation, while network and security teams are responsible for its secure configuration and exposure. The first practical step is to identify all deployed instances of the affected technology, confirm their reachability and business criticality, and then assign ownership to initiate a risk-based remediation plan.

  • Platform/Infrastructure teams should own the issue.
  • Verify external exposure and business criticality first.
  • Plan remediation based on identified risk.

Supplementary metadata

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.

Frequently asked questions

What is IBM DataPower Gateway?

IBM DataPower Gateway is a specialized hardware or virtual appliance designed to manage, secure, and accelerate XML, JSON, and other web traffic. Organizations use it as a central hub at the network edge to act as an API proxy, security gateway, and integration point for connecting diverse backend services to external applications.

What does CWE-122 mean for CVE-2026-14888?

CVE-2026-14888 is classified as a heap-based buffer overflow, or CWE-122. This weakness occurs when a program writes more data to a memory area on the heap than it is designed to hold. In this case, an attacker can intentionally overflow this memory space to overwrite adjacent data or code, which may allow them to execute unauthorized commands or take control of the application.

How can an attacker trigger this vulnerability?

An attacker can trigger this issue by sending specially crafted network requests to the appliance. Because the vulnerability exists within the processing logic of these requests, it does not require prior authentication or specialized user access. Simply interacting with the device over the network is enough to potentially reach the vulnerable code path.

Is my IBM DataPower Gateway at high risk?

Halo Surface Signal indicates that because DataPower Gateways are designed to serve as internet-facing proxies and security edges, they are frequently positioned at the network perimeter. If your instance is accessible from the public internet, it sits at a highly exposed surface where remote actors can attempt to reach it directly.

When should I take action for this CVE?

You should prioritize this immediately by identifying every DataPower Gateway instance in your environment. Once you have a complete inventory, verify the specific software versions currently running against the affected list. Consult official IBM guidance to confirm your status and coordinate with your infrastructure team to plan a secure update or configuration change.

References