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CVE-2016-9070

21
FAUCET Score

CVE-2016-9070 describes a high-severity vulnerability in Mozilla Firefox versions prior to 50, where a maliciously crafted page loaded via a bookmark into the sidebar could reference a privileged chrome window. This allowed limited JavaScript operations to bypass cross-origin protections. The attack requires user interaction (UI:R) and low privileges (PR:L), but if successful, could lead to high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). While no public exploit code or active exploitation has been identified, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
< 50CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.0HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.94%
Probability of exploitation in next 30 days
EPSS Percentile
78.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0194 is in the 92nd percentile among its peer group of 890 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 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)

mozillapatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2016-9070Moderate

firefox: Sidebar bookmark can have reference to chrome window

Nov 15, 2016

References

bugzilla.mozilla.org / show_bug.cgi
Issue TrackingPatchVendor Advisory
mozilla.org / security/advisories/mfsa2016-89
Vendor Advisory
securityfocus.com / bid/94337
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037298
Third Party AdvisoryVDB Entry