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CVE-2016-2816

21
FAUCET Score

CVE-2016-2816 describes a vulnerability in Mozilla Firefox before version 46.0, allowing remote attackers to bypass the Content Security Policy (CSP) protection mechanism. This medium-severity vulnerability, with a CVSS score of 6.5, requires user interaction (UI:R) and could lead to high integrity impacts (I:H) if exploited. Despite its potential, there is no evidence of active exploitation, no known exploit code in Metasploit or ExploitDB, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 45.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

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
2.31%
Probability of exploitation in next 30 days
EPSS Percentile
81.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0231 is in the 91st percentile among its peer group of 26,208 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

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2016-2816Moderate

Mozilla: CSP not applied to pages sent with multipart/x-mixed-replace (MFSA 2016-45)

Apr 26, 2016

References

lists.opensuse.org / opensuse-security-announce/2016-05/msg00005.html
lists.opensuse.org / opensuse-updates/2016-05/msg00038.html
bugzilla.mozilla.org / show_bug.cgi
security.gentoo.org / glsa/201701-15
mozilla.org / security/announce/2016/mfsa2016-45.html
Vendor Advisory
securitytracker.com / id/1035692
ubuntu.com / usn/USN-2936-1
ubuntu.com / usn/USN-2936-2
ubuntu.com / usn/USN-2936-3