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IBM DataPower Gateway: Buffer overflow (out-of-bounds write)

CVE-2026-14992Critical 9.8

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Summary

Several IBM DataPower Gateway versions contain a buffer overflow caused by an out-of-bounds write. The CVSS vector indicates that a remote attacker without authentication or user interaction could exploit it to affect confidentiality, integrity and availability. IBM's public details are limited, and CISA SSVC lists no known exploitation.

Affected

  • IBM DataPower Gateway 10.5.0: 10.5.0.0 to 10.5.0.22
  • IBM DataPower Gateway 10.6.0: 10.6.0.0 to 10.6.0.10
  • IBM DataPower Gateway 10.6CD: 10.6.1 to 10.6.6
  • IBM DataPower Gateway 11.0.0: 11.0.0.0 to 11.0.0.2

Fixed in

  • IBM DataPower Gateway 10.5.0: 10.5.0.23
  • IBM DataPower Gateway 10.6.0: 10.6.0.11
  • IBM DataPower Gateway 10.6CD: 11.0.0.3
  • IBM DataPower Gateway 11.0.0: 11.0.0.3

Workaround

Unknown.

Exploitation

  • CISA SSVC: exploitation none, automatable yes, technical impact total.
  • No known exploitation in the wild.
  • Public exploit code: Unknown.

Our recommendation

  • Inventory all DataPower Gateway instances and their versions.
  • Upgrade to the fixed release for each branch as soon as possible; one upgrade also covers the other issues in IBM's security bulletin.
  • Until patched, restrict management and API listeners to trusted networks and do not expose the appliance directly to the internet.
  • Monitor the gateway for abnormal crashes or unexpected behaviour.

Public exploits

PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.

Research sources

Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 30 Oct 2026, 20:26.

Original description (NVD)

IBM DataPower Gateway 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 vulnerable to buffer overflow.

NVD references (1)

Sources

The tracker combines official, freely usable data sources – updated continuously:

This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.

Affected? We can help.

We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.