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CVE-2026-14509 IBM CVE debrief

IBM DataPower Gateway is vulnerable to a denial of service due to algorithmic complexity in linked-list traversal. This issue affects various versions of IBM DataPower Gateway, including 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. Defenders should assess exposure and prioritize remediation. The vulnerability could allow a remote attacker to cause a denial of service. IBM DataPower Gateway systems are potentially impacted, particularly those using affected versions.

Vendor
IBM
Product
DataPower Gateway 10.6CD
CVSS
MEDIUM 5.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-08
Original CVE updated
2026-10-08
Advisory published
2026-10-08
Advisory updated
2026-10-08

Who should care

Defenders responsible for IBM DataPower Gateway systems, particularly those using affected versions, should assess exposure and prioritize remediation.

Why it matters

Defenders should prioritize verifying exposure in their inventory and assessing the potential impact on their systems due to the denial of service vulnerability in IBM DataPower Gateway.

  • Potential denial of service attacks against IBM DataPower Gateway systems
  • Need to verify inventory for affected versions and assess potential impact
  • Priority on applying vendor-provided patches or updates
  • Monitoring systems for signs of denial of service attacks

Technical summary

IBM DataPower Gateway is vulnerable to a denial of service due to algorithmic complexity in linked-list traversal. This issue affects various versions of IBM DataPower Gateway, including 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.

Defensive priority

Defenders should prioritize verifying exposure in their inventory and assessing the potential impact on their systems.

Recommended defensive actions

  • Verify inventory for affected IBM DataPower Gateway versions and assess potential impact
  • Review and apply vendor-provided patches or updates
  • Monitor systems for signs of denial of service attacks

Evidence notes

The CVE Program record and NVD vulnerability detail provide information on the vulnerability, but do not offer specific details on exploitation or impact.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-14509 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-14509

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-14509 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-14509

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • IBM DataPower Gateway Denial of Service

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/14xxx/CVE-2026-14509.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://www.ibm.com/support/pages/node/7289775

    Supplemental source - vendor-advisory, patch

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.