Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-5217

21
FAUCET Score

CVE-2016-5217 describes a vulnerability in Google Chrome versions prior to 55.0.2883.75 (Mac, Windows, Linux) and 55.0.2883.84 (Android) where the extensions API improperly allowed access to privileged plugins. This flaw enabled a remote attacker to bypass site isolation through a specially crafted HTML page. Rated Medium severity (CVSS 6.5), it requires user interaction (UI:R) but has low attack complexity (AC:L) and could lead to high integrity impact (I:H). While not listed on CISA's KEV catalog and lacking public exploit code, it garnered significant community discussion and media coverage at the time of its disclosure.

Impacted Technologies

VendorProductVersion(s)CPE
<= 54.0.2840.99CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.23%
Probability of exploitation in next 30 days
EPSS Percentile
65.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0123 is in the 78th percentile among its peer group of 26,219 CVEs.

Social Chatter

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

Media Mentions

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

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: chromium-browser-0:55.0.2883.75-1.el6
View patch

Vendor Advisories (1)

redhatCVE-2016-5217Moderate

chromium-browser: use of unvalidated data in pdfium

Dec 1, 2016

References

rhn.redhat.com / errata/RHSA-2016-2919.html
chromereleases.googleblog.com / 2016/12/stable-channel-update-for-desktop.html
crbug.com / 654280
security.gentoo.org / glsa/201612-11
securityfocus.com / bid/94633