What is CVE-2016-3033?

CVE-2016-3033 is a high-severity vulnerability in IBM Appscan Source, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.1/10. Published 2016-12-01.

How severe is CVE-2016-3033?

High severity. CVSS v3 base score is 8.1 out of 10.

XXE in IBM Appscan Source

CVE-2016-3033

IBM AppScan Source 8.7 through 9.0.3.3 allows remote authenticated users to read arbitrary files or cause a denial of service (memory consumption) via an XML document containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.

Vulnerability class: XXE (XML External Entity)

Published 2016-12-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.014 (71.2th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

IBM Appscan Source — versions 8.7, 8.7.0.1, 8.8

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

www-01.ibm.com/support/docview.wss (Vendor Advisory)
www.securityfocus.com/bid/92388 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2016-3033?: CVE-2016-3033 is a high-severity vulnerability in IBM Appscan Source, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.1/10. Published 2016-12-01.
How severe is CVE-2016-3033?: High severity. CVSS v3 base score is 8.1 out of 10.