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CVE-2012-3986

19
FAUCET Score

CVE-2012-3986 describes an access restriction bypass vulnerability in Mozilla Firefox, Firefox ESR, Thunderbird, Thunderbird ESR, and SeaMonkey versions prior to 16.0 and 10.0.8 respectively. This flaw allows remote attackers to execute crafted JavaScript to bypass security controls by improperly calling DOMWindowUtils methods. Rated with a CVSS score of 4.3, this vulnerability has a medium attack complexity and could lead to partial integrity impact, though confidentiality and availability are not directly affected. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 10.0.8CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 10.0.8CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird_esr:*:*:*:*:*:*:*:*
< 16.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 16.0CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
< 2.13CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*

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
2.51%
Probability of exploitation in next 30 days
EPSS Percentile
83.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0251 is in the 74th percentile among its peer group of 19,953 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-0:10.0.8-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:10.0.8-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:10.0.8-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:10.0.8-1.el6_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:10.0.8-1.el6_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:10.0.8-1.el6_3
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2012-3986Moderate

Mozilla: Some DOMWindowUtils methods bypass security checks (MFSA 2012-77)

Oct 9, 2012

References

lists.opensuse.org / opensuse-security-announce/2012-10/msg00010.html
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2012-1351.html
Third Party Advisory
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingVendor Advisory
secunia.com / advisories/50856
Third Party Advisory
secunia.com / advisories/50892
Third Party Advisory
secunia.com / advisories/50904
Third Party Advisory
secunia.com / advisories/50935
Third Party Advisory
secunia.com / advisories/50936
Third Party Advisory
secunia.com / advisories/50984
Third Party Advisory
secunia.com / advisories/51181
Third Party Advisory
secunia.com / advisories/55318
Third Party Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16834
Third Party Advisory
debian.org / security/2012/dsa-2565
Third Party Advisory
debian.org / security/2012/dsa-2569
Third Party Advisory
debian.org / security/2012/dsa-2572
Third Party Advisory
mandriva.com / security/advisories
Third Party Advisory
mozilla.org / security/announce/2012/mfsa2012-77.html
Vendor Advisory
securityfocus.com / bid/55922
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-1611-1
Third Party Advisory