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CVE-2012-4195

20
FAUCET Score

CVE-2012-4195 describes a cross-site scripting (XSS) vulnerability in the nsLocation::CheckURL function affecting Mozilla Firefox, Thunderbird, and SeaMonkey versions prior to their respective patches. This flaw allows remote attackers to conduct XSS attacks and execute arbitrary JavaScript code through crafted websites or by leveraging specific add-on behaviors. With a CVSS score of 4.3 (medium severity), it requires user interaction (medium attack complexity) and primarily impacts integrity, allowing for partial information disclosure or manipulation. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 10.0.10CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 16.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 2.13.2CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
< 16.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
< 10.0.10CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird_esr:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.90%
Probability of exploitation in next 30 days
EPSS Percentile
77.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0190 is in the 60th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:10.0.10-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:10.0.10-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:10.0.10-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:10.0.10-1.el6_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:10.0.10-1.el6_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:10.0.10-1.el6_3
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2012-4195Critical

Mozilla: Fixes for Location object issues (MFSA 2012-90)

Oct 26, 2012

References

lists.opensuse.org / opensuse-security-announce/2012-10/msg00019.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2012-10/msg00025.html
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2012-1407.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2012-1413.html
Third Party Advisory
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingVendor Advisory
secunia.com / advisories/51121
Third Party Advisory
secunia.com / advisories/51123
Third Party Advisory
secunia.com / advisories/51127
Third Party Advisory
secunia.com / advisories/51144
Third Party Advisory
secunia.com / advisories/51146
Third Party Advisory
secunia.com / advisories/51147
Third Party Advisory
secunia.com / advisories/51165
Third Party Advisory
secunia.com / advisories/55318
Third Party Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16856
Third Party Advisory
mozilla.org / security/announce/2012/mfsa2012-90.html
Vendor Advisory
securityfocus.com / bid/56302
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-1620-1
Third Party Advisory
ubuntu.com / usn/USN-1620-2
Third Party Advisory