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CVE-2015-4474

27
FAUCET Score

CVE-2015-4474 describes multiple unspecified memory corruption vulnerabilities in the browser engine of Mozilla Firefox versions prior to 40.0, impacting various distributions including Canonical and OpenSUSE. With a critical CVSS score of 10.0, this vulnerability allows unauthenticated remote attackers to cause a denial of service through application crashes or potentially execute arbitrary code with high impact on confidentiality, integrity, and availability. Despite its high severity, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or KEV listing, and community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
15.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
13.1CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
13.2CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
6.44%
Probability of exploitation in next 30 days
EPSS Percentile
93.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0644 is in the 88th percentile among its peer group of 51,553 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, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2015-4474Critical

Mozilla: Miscellaneous memory safety hazards (rv:40.0) (MFSA 2015-79)

Aug 11, 2015

References

lists.opensuse.org / opensuse-security-announce/2015-08/msg00014.html
lists.opensuse.org / opensuse-security-announce/2015-08/msg00015.html
lists.opensuse.org / opensuse-security-announce/2015-08/msg00021.html
lists.opensuse.org / opensuse-security-announce/2015-09/msg00016.html
lists.opensuse.org / opensuse-security-announce/2015-11/msg00025.html
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
security.gentoo.org / glsa/201605-06
mozilla.org / security/announce/2015/mfsa2015-79.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
securitytracker.com / id/1033247
securitytracker.com / id/1033372
ubuntu.com / usn/USN-2702-1
ubuntu.com / usn/USN-2702-2
ubuntu.com / usn/USN-2702-3