What is CVE-2017-0033?

CVE-2017-0033 is a medium-severity vulnerability in Microsoft Edge, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2017-03-17.

How severe is CVE-2017-0033?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Improper input validation in Microsoft Edge

CVE-2017-0033

Microsoft Internet Explorer 11 and Microsoft Edge allow remote attackers to spoof web content via a crafted web site, aka "Microsoft Browser Spoofing Vulnerability." This vulnerability is different from those described in CVE-2017-0012 and CVE-2017-0069.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2017-03-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.081 (94.7th percentile), scored 2026-10-06.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.081 · newest: 0.081 · change: 0.000

Affected products

Microsoft Edge
Microsoft Internet Explorer — versions 11
Microsoft Corporation Browser — versions Internet Explorer 11 and Microsoft Edge

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securityfocus.com/bid/96087 (VDB Entry, Third Party Advisory, vdb-entry)
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0033 (Patch, Vendor Advisory)
www.securitytracker.com/id/1038006 (vdb-entry)

Frequently asked questions

What is CVE-2017-0033?: CVE-2017-0033 is a medium-severity vulnerability in Microsoft Edge, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2017-03-17.
How severe is CVE-2017-0033?: Medium severity. CVSS v3 base score is 4.3 out of 10.