CVE-2016-5994 IBM CVE debrief

Who should care

IBM InfoSphere Information Server administrators, security teams, and operators responsible for engine-tier access controls and data protection should care, especially if the platform stores sensitive or regulated data.

Technical summary

The NVD entry maps this issue to CWE-200 and describes it as a privilege-gated file exposure problem: a user with valid authentication could browse arbitrary files on the engine tier and read their contents. The recorded CVSS vector is CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N, indicating network-reachable, low-complexity exploitation requiring low privileges and resulting in high confidentiality impact without integrity or availability impact.

Defensive priority

Medium. Prioritize remediation if the engine tier hosts credentials, configuration secrets, source code, customer data, or other sensitive files, because the flaw exposes contents rather than disrupting service.

Recommended defensive actions

• Apply the IBM security fix referenced in the vendor advisory for CVE-2016-5994.
• Restrict authenticated access on the engine tier to only users and roles that require it.
• Review file and directory permissions on engine-tier systems to minimize readable content exposure.
• Audit access logs for unusual file browsing or broad read attempts by authenticated users.
• Inventory sensitive files on affected systems and move secrets out of broadly accessible locations where possible.
• Confirm your deployment includes IBM InfoSphere Information Server 11.5, the vulnerable CPE version listed by NVD.

Evidence notes

The description comes from the NVD entry for CVE-2016-5994, which states that an authenticated user could browse any file on the engine tier and examine its contents. NVD assigns CWE-200 and CVSS v3.0 vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. IBM PSIRT is listed in the references through the vendor advisory link, indicating an official vendor disclosure and mitigation source.

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.