CVE-2026-16159 IBM CVE debrief

Who should care

Defenders responsible for IBM DataPower Gateway deployments should assess exposure and prioritize patching to prevent potential denial of service and sensitive information disclosure.

Why it matters

Defenders should prioritize patching affected IBM DataPower Gateway versions to prevent potential denial of service and sensitive information disclosure. This vulnerability could allow a remote attacker to obtain sensitive information and cause a denial of service. Affected deployments should be reviewed and updated to prevent exploitation.

• Denial of service due to out-of-bounds write
• Potential disclosure of sensitive information
• Need to verify affected versions and patch status
• Possible impact on data integrity and confidentiality

Technical summary

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 are affected by an out-of-bounds write vulnerability, which could allow a remote attacker to obtain sensitive information and cause a denial of service. The vulnerability is caused by an out-of-bounds write, which can be triggered by a remote attacker. Defenders should prioritize patching affected IBM DataPower Gateway versions to prevent potential denial of service and sensitive information disclosure.

Defensive priority

Defenders should prioritize patching affected IBM DataPower Gateway versions to prevent potential denial of service and sensitive information disclosure.

Recommended defensive actions

• Patch affected IBM DataPower Gateway versions
• Review and update inventory of IBM DataPower Gateway deployments
• Monitor for potential denial of service and sensitive information disclosure
• Verify affected versions and patch status
• Review compensating controls for exposed systems
• Check relevant monitoring, detection, and logs for exposed assets
• Track exceptions and retest remediated assets

Evidence notes

The CVE record and source item provide details on the vulnerability, but additional information from IBM's official advisory is needed to fully assess the impact. The advisory and CVE details indicate an out-of-bounds write vulnerability exists, but further review is required to understand the full scope of affected deployments and potential mitigations. Defenders should verify affected versions, review patch status, and assess potential operational impacts.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.