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CVE-2015-0818

20
FAUCET Score

CVE-2015-0818 describes a Same Origin Policy bypass vulnerability in Mozilla Firefox before 36.0.4, Firefox ESR before 31.5.3, and SeaMonkey before 2.33.1, allowing remote attackers to execute arbitrary JavaScript with chrome privileges via SVG hash navigation. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low complexity, potentially leading to partial confidentiality, integrity, and availability compromise. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability garnered some community discussion and media coverage at the time of its disclosure, including a SecurityWeek article. It is not listed in the KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
<= 36.0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
31.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:31.0:*:*:*:*:*:*:*
31.1.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:31.1.0:*:*:*:*:*:*:*
31.1.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:31.1.1:*:*:*:*:*:*:*
31.3.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:31.3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.15%
Probability of exploitation in next 30 days
EPSS Percentile
86.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0315 is in the 76th percentile among its peer group of 51,551 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

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:31.5.3-1.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:31.5.3-1.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:31.5.3-3.ael7b_1
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2015-0818Critical

Mozilla: Privilege escalation through SVG navigation (MFSA 2015-28)

Mar 21, 2015

References

lists.opensuse.org / opensuse-security-announce/2015-03/msg00026.html
lists.opensuse.org / opensuse-security-announce/2015-03/msg00029.html
lists.opensuse.org / opensuse-security-announce/2015-03/msg00035.html
lists.opensuse.org / opensuse-updates/2015-03/msg00096.html
rhn.redhat.com / errata/RHSA-2015-0718.html
bugzilla.mozilla.org / show_bug.cgi
security.gentoo.org / glsa/201504-01
debian.org / security/2015/dsa-3201
mozilla.org / security/announce/2015/mfsa2015-28.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2015-2511959.html
securityfocus.com / bid/73265
securitytracker.com / id/1031959
ubuntu.com / usn/USN-2538-1