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CVE-2026-15781 IBM CVE debrief

IBM DataPower Gateway Buffer Overflow vulnerability. The vulnerability affects IBM DataPower Gateway instances in 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. A remote authenticated attacker could exploit this vulnerability to execute arbitrary code, potentially disrupting service or data integrity. Defenders should assess exposure and apply patches or mitigations as needed. The CVE record and source item provide details on the buffer overflow vulnerability in IBM DataPower Gateway.

Vendor
IBM
Product
DataPower Gateway 10.6CD
CVSS
HIGH 8
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 instances, particularly those in 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, should assess exposure and apply patches or mitigations as needed.

Why it matters

The buffer overflow vulnerability in IBM DataPower Gateway could allow a remote authenticated attacker to execute arbitrary code, potentially disrupting service or data integrity. Defenders should assess exposure, apply patches, and monitor for exploitation attempts.

  • Potential execution of arbitrary code by a remote authenticated attacker
  • Possible disruption of service or data integrity
  • Need for inventory and patch management of affected IBM DataPower Gateway instances
  • Verification of applied patches and monitoring for exploitation attempts

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 could allow a remote authenticated attacker to execute arbitrary code due to a buffer overflow. The vulnerability exists in the IBM DataPower Gateway product and can be exploited by a remote authenticated attacker. IBM has provided an advisory with patch information to address this vulnerability.

Defensive priority

High

Recommended defensive actions

  • Review and apply the patch provided by IBM
  • Inventory and assess exposure of IBM DataPower Gateway instances
  • Monitor for potential exploitation attempts

Evidence notes

The CVE record and source item provide details on the buffer overflow vulnerability in IBM DataPower Gateway. The vendor, IBM, has provided an advisory with patch information.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-15781 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-15781

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

  • CVE-2026-15781 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-15781

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

Supplemental references

  • IBM DataPower Gateway Buffer Overflow

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/15xxx/CVE-2026-15781.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.