CVE-2026-14991 IBM CVE debrief

Who should care

Defenders responsible for IBM DataPower Gateway systems, particularly those with local user access, should assess exposure and prioritize patching. Those responsible for DataPower Gateway systems, especially with local user access, should verify affected versions and assess exposure in their environment. This is crucial to prevent potential code execution and system compromise.

Why it matters

Defenders should care about CVE-2026-14991 because it allows local users to execute arbitrary code on IBM DataPower Gateway systems, potentially leading to system compromise. Those responsible for DataPower Gateway systems, especially with local user access, should assess exposure and prioritize patching to prevent potential code execution and system compromise. The vulnerability affects various versions of DataPower Gateway, and verification of affected versions and exposure is required. Patching is the recommended priority.

• Potential code execution by local users.
• System compromise through buffer overflow.
• Verification of affected versions and exposure required.
• Patching priority for vulnerable DataPower Gateway systems.

Technical summary

IBM DataPower Gateway is vulnerable to a buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system. The vulnerability affects DataPower Gateway 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. This issue could lead to system compromise if exploited. Defenders should assess exposure and prioritize patching to prevent potential code execution and system compromise. Verification of affected versions and exposure is required.

Defensive priority

High

Recommended defensive actions

• Review and apply vendor patches for affected DataPower Gateway versions.
• Restrict access to vulnerable systems and monitor for suspicious activity.
• Verify affected versions and assess exposure in your environment.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• technicalSummary

Evidence notes

The CVE record and source item provide details on the vulnerability, affected versions, and a reference to a vendor advisory. The vulnerability is caused by improper bounds checking, allowing a local user to overflow the buffer and execute arbitrary code on the system. Verification of affected versions and exposure is required. Patching is the recommended priority. The source item provides details on the vulnerability and affected versions.

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.