What is CVE-2016-5672?

CVE-2016-5672 is a high-severity vulnerability in Intel Crosswalk, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2016-08-01.

How severe is CVE-2016-5672?

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

Improper input validation in Intel Crosswalk

CVE-2016-5672

Intel Crosswalk before 19.49.514.5, 20.x before 20.50.533.11, 21.x before 21.51.546.0, and 22.x before 22.51.549.0 interprets a user's acceptance of one invalid X.509 certificate to mean that all invalid X.509 certificates should be accepted without prompting, which makes it easier for man-in-the-middle attackers to spoof SSL servers and obtain sensitive information via a crafted certificate.

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

Published 2016-08-01 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.017 (76.8th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Intel Crosswalk

Weakness classification (CWE)

References

blogs.intel.com/evangelists/2016/07/28/crosswalk-security-vulnerability/ (Vendor Advisory)
www.securityfocus.com/bid/92199 (VDB Entry, Third Party Advisory, vdb-entry)
wwws.nightwatchcybersecurity.com/2016/07/29/advisory-intel-crosswalk-ssl-prompt… (Third Party Advisory)
crosswalk-project.org/jira/browse/XWALK-6986 (Technical Description, Permissions Required)
packetstormsecurity.com/files/138107/Intel-Crosswalk-Project-Man-In-The-Middle… (VDB Entry, Third Party Advisory)
lists.crosswalk-project.org/pipermail/crosswalk-help/2016-July/002167.html (Vendor Advisory, mailing-list)
www.securityfocus.com/archive/1/539051/100/0/threaded (mailing-list)
www.kb.cert.org/vuls/id/217871 (US Government Resource, Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2016-5672?: CVE-2016-5672 is a high-severity vulnerability in Intel Crosswalk, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2016-08-01.
How severe is CVE-2016-5672?: High severity. CVSS v3 base score is 8.1 out of 10.