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CVE-2015-0801

20
FAUCET Score

CVE-2015-0801 is a critical Same Origin Policy bypass vulnerability affecting Mozilla Firefox before version 37.0, Firefox ESR before 31.6, and Thunderbird before 31.6. This flaw allows remote attackers to execute arbitrary JavaScript with chrome privileges through anchor navigation, similar to CVE-2015-0818. With a CVSS score of 7.5, this vulnerability is highly severe due to its network-based attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation is reported, the vulnerability received some community discussion and media coverage at the time of its disclosure.

Impacted Technologies

VendorProductVersion(s)CPE
<= 31.5.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
<= 36.0.4CPE 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:*:*:*:*:*:*:*

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
3.25%
Probability of exploitation in next 30 days
EPSS Percentile
87.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0325 is in the 77th percentile among its peer group of 51,506 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 (8)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:31.6.0-1.el7_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:31.6.0-2.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:31.6.0-1.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:31.6.0-2.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:31.6.0-1.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:31.6.0-2.el7_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: xulrunner-0:31.6.0-2.el7_1
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2015-0801Moderate

Mozilla: Same-origin bypass through anchor navigation (MFSA 2015-40)

Mar 31, 2015

References

lists.opensuse.org / opensuse-security-announce/2015-04/msg00003.html
lists.opensuse.org / opensuse-security-announce/2015-04/msg00006.html
lists.opensuse.org / opensuse-security-announce/2015-05/msg00012.html
lists.opensuse.org / opensuse-security-announce/2015-07/msg00031.html
rhn.redhat.com / errata/RHSA-2015-0766.html
rhn.redhat.com / errata/RHSA-2015-0771.html
bugzilla.mozilla.org / show_bug.cgi
security.gentoo.org / glsa/201512-10
debian.org / security/2015/dsa-3211
debian.org / security/2015/dsa-3212
mozilla.org / security/announce/2015/mfsa2015-40.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2015-2511959.html
securityfocus.com / bid/73455
securitytracker.com / id/1031996
securitytracker.com / id/1032000
ubuntu.com / usn/USN-2550-1
ubuntu.com / usn/USN-2552-1