What is CVE-2016-4403?

CVE-2016-4403 is a critical-severity vulnerability in Hewlett Packard Enterprise HP Keyview, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-08-06.

How severe is CVE-2016-4403?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Hewlett Packard Enterprise HP Keyview

CVE-2016-4403

A security vulnerability was identified in the Filter SDK component of HP KeyView earlier than v11.2. The vulnerability could be exploited remotely to allow code execution via memory corruption.

Vulnerability class: Buffer Overflow

Published 2018-08-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.136 (96.3th percentile), scored 2026-09-29.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.136 · newest: 0.136 · change: 0.000

Affected products

Hewlett Packard Enterprise HP Keyview — versions earlier than v11.2
HP Keyview

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

support.hpe.com/hpsc/doc/public/display (Vendor Advisory)
www.securityfocus.com/bid/94184 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1037235 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2016-4403?: CVE-2016-4403 is a critical-severity vulnerability in Hewlett Packard Enterprise HP Keyview, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-08-06.
How severe is CVE-2016-4403?: Critical severity. CVSS v3 base score is 9.8 out of 10.