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CVE-2016-5672

27
FAUCET Score

CVE-2016-5672 describes a critical vulnerability in Intel Crosswalk versions 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. This flaw allows a user's acceptance of a single invalid X.509 certificate to implicitly approve all subsequent invalid certificates, making it significantly easier for man-in-the-middle (MitM) attackers to spoof SSL servers. With a CVSS v3.0 score of 8.1 (HIGH), the vulnerability has a network attack vector, low attack complexity, and requires user interaction, potentially leading to high confidentiality and integrity impacts. While there is no evidence of active exploitation, public exploit code, or Metasploit modules, the vulnerability has garnered some community discussion and media coverage, indicating awareness of its potential.

Impacted Technologies

VendorProductVersion(s)CPE
<= 19.49.514.4CPE matchmatch criteria
cpe:2.3:a:intel:crosswalk:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.74%
Probability of exploitation in next 30 days
EPSS Percentile
75.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0174 is in the 74th percentile among its peer group of 14,824 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/138107/Intel-Crosswalk-Project-Man-In-The-Middle.html
Third Party AdvisoryVDB Entry
blogs.intel.com / evangelists/2016/07/28/crosswalk-security-vulnerability
Vendor Advisory
crosswalk-project.org / jira/browse/XWALK-6986
Permissions RequiredTechnical Description
lists.crosswalk-project.org / pipermail/crosswalk-help/2016-July/002167.html
Vendor Advisory
wwws.nightwatchcybersecurity.com / 2016/07/29/advisory-intel-crosswalk-ssl-prompt-issue
Third Party Advisory
kb.cert.org / vuls/id/217871
Third Party AdvisoryUS Government Resource
securityfocus.com / archive/1/539051/100/0/threaded
securityfocus.com / bid/92199
Third Party AdvisoryVDB Entry