CVE-2016-0307 IBM CVE debrief

Who should care

IBM Connections administrators, application owners, and security teams responsible for internet-facing or internally accessible IBM Connections deployments, especially those running versions 4.0, 4.5, 5.0, or 5.5.

Technical summary

NVD classifies the issue as CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor). The CVSS v3.0 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N, indicating a network-reachable issue that requires low privileges and no user interaction, with confidentiality impact only. The published description states that stack traces in returned responses may expose sensitive information.

Defensive priority

Medium. The issue does not indicate direct code execution or integrity impact, but stack trace disclosure can leak internal details that may assist follow-on attacks. Patch or mitigate promptly on affected IBM Connections deployments.

Recommended defensive actions

• Review IBM's advisory and patch guidance for CVE-2016-0307.
• Update affected IBM Connections installations to a fixed version or apply the vendor-recommended remediation.
• Verify that error handling does not return stack traces or other diagnostic details to clients.
• Restrict access to affected services where practical, especially in externally reachable deployments.
• Confirm which IBM Connections versions are in use across the environment and prioritize 4.0, 4.5, 5.0, and 5.5 instances.
• After remediation, validate that responses no longer expose stack traces during error conditions.

Evidence notes

The supplied NVD record marks the vulnerability as affecting IBM Connections 4.0, 4.5, 5.0, and 5.5. The vulnerability is mapped to CWE-200 and has CVSS v3.0 vector AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. NVD references an IBM support advisory/patched guidance page and a SecurityFocus BID entry. The CVE was published on 2017-02-08; the 2026 modified timestamp should not be treated as the issue date.

Official resources