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CVE-2016-5272

27
FAUCET Score

CVE-2016-5272 is a critical vulnerability affecting Mozilla Firefox versions prior to 49.0, Firefox ESR 45.x before 45.4, and Thunderbird before 45.4. It stems from improper casting within the nsImageGeometryMixin class when handling INPUT elements, allowing remote attackers to execute arbitrary code through a crafted website. With a CVSS score of 8.8 (High), this vulnerability is easily exploitable over a network with low attack complexity, potentially leading to full compromise of confidentiality, integrity, and availability. While no active exploits, Metasploit modules, or ExploitDB entries are publicly available, and community discussion is minimal, the high CVSS score indicates a significant risk.

Impacted Technologies

VendorProductVersion(s)CPE
<= 48.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
45.1.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:45.1.0:*:*:*:*:*:*:*
45.1.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:45.1.1:*:*:*:*:*:*:*
45.2.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:45.2.0:*:*:*:*:*:*:*
45.3.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:45.3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.24%
Probability of exploitation in next 30 days
EPSS Percentile
81.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0224 is in the 80th percentile among its peer group of 14,855 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

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:45.4.0-1.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:45.4.0-1.el6_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:45.4.0-1.el7_2
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2016-5272Important

Mozilla: Bad cast in nsImageGeometryMixin (MFSA 2016-85, MFSA 2016-86)

Sep 20, 2016

References

rhn.redhat.com / errata/RHSA-2016-1912.html
bugzilla.mozilla.org / show_bug.cgi
Issue Tracking
security.gentoo.org / glsa/201701-15
mozilla.org / security/advisories/mfsa2016-86
mozilla.org / security/advisories/mfsa2016-88
debian.org / security/2016/dsa-3674
mozilla.org / security/announce/2016/mfsa2016-85.html
Vendor Advisory
oracle.com / technetwork/topics/security/linuxbulletinoct2016-3090545.html
securityfocus.com / bid/93049
securitytracker.com / id/1036852