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CVE-2012-4196

24
FAUCET Score

CVE-2012-4196 describes a Same Origin Policy bypass vulnerability affecting Mozilla Firefox, Firefox ESR, Thunderbird, Thunderbird ESR, and SeaMonkey versions prior to their respective patches. This flaw allows remote attackers to read the Location object through a prototype property-injection attack. With a CVSS score of 6.4 (medium severity), it has a low attack complexity and requires no authentication, potentially leading to partial confidentiality and integrity compromise. There is no known active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 16.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
>= 10.0, < 10.0.10CPE 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, < 10.0.10CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird_esr:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.4MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.29%
Probability of exploitation in next 30 days
EPSS Percentile
87.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0329 is in the 82nd percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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)

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

Vendor Advisories (1)

redhatCVE-2012-4196Critical

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
ExploitIssue TrackingPatchVendor 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%3A16962
Third Party Advisory
mozilla.org / security/announce/2012/mfsa2012-90.html
Vendor Advisory
securityfocus.com / bid/56306
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-1620-1
Third Party Advisory
ubuntu.com / usn/USN-1620-2
Third Party Advisory