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CVE-2012-4210

The Style Inspector in Mozilla Firefox before 17.0 and Firefox ESR 10.x before 10.0.11 does not...

9.3 HighFix available

The Style Inspector in Mozilla Firefox before 17.0 and Firefox ESR 10.x before 10.0.11 does not properly restrict the context of HTML markup and Cascading Style Sheets (CSS) token sequences, which allows user-assisted remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted stylesheet.

Exploit likelihood

3.53%Down 0.4 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 9.3

The Style Inspector in Mozilla Firefox before 17.0 and Firefox ESR 10.x before 10.0.11 does not properly restrict the context of HTML markup and Cascading Style Sheets (CSS) token sequences, which allows user-assisted remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted stylesheet.

Record
CVE-2012-4210
CVSS 2.0
9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness
CWE-264
Updated
2026-11-02
CVE List No score

The Style Inspector in Mozilla Firefox before 17.0 and Firefox ESR 10.x before 10.0.11 does not properly restrict the context of HTML markup and Cascading Style Sheets (CSS) token sequences, which allows user-assisted remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted stylesheet.

Record
CVE-2012-4210
Updated
2026-11-02
EUVDEUVD-2012-4154 No score

The Style Inspector in Mozilla Firefox before 17.0 and Firefox ESR 10.x before 10.0.11 does not properly restrict the context of HTML markup and Cascading Style Sheets (CSS) token sequences, which allows user-assisted remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted stylesheet.

Record
EUVD-2012-4154
Updated
2026-11-03
GitHub AdvisoriesGHSA-vghf-6629-65jw No score

The Style Inspector in Mozilla Firefox before 17.0 and Firefox ESR 10.x before 10.0.11 does not...

The Style Inspector in Mozilla Firefox before 17.0 and Firefox ESR 10.x before 10.0.11 does not properly restrict the context of HTML markup and Cascading Style Sheets (CSS) token sequences, which allows user-assisted remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted stylesheet.

Record
GHSA-vghf-6629-65jw
Updated
2026-11-02
OSVopenSUSE-SU-2024:10071-1 No score

MozillaFirefox-50.1.0-1.1 on GA media

These are all security issues fixed in the MozillaFirefox-50.1.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10071-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:14572-1 No score

firefox-esr-128.5.1-1.1 on GA media

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:14572-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
firefox
Red Hat:enterprise_linux:5::client
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
firefox-debuginfo
Red Hat:enterprise_linux:5::client
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner
Red Hat:enterprise_linux:5::client
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner-debuginfo
Red Hat:enterprise_linux:5::client
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner
Red Hat:enterprise_linux:5::client_workstation
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner-debuginfo
Red Hat:enterprise_linux:5::client_workstation
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner-devel
Red Hat:enterprise_linux:5::client_workstation
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
firefox
Red Hat:enterprise_linux:5::server
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
firefox-debuginfo
Red Hat:enterprise_linux:5::server
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner
Red Hat:enterprise_linux:5::server
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
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Affected packages
PackageAffectedFixed
xulrunner-debuginfo
Red Hat:enterprise_linux:5::server
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner-devel
Red Hat:enterprise_linux:5::server
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
firefox
Red Hat:enterprise_linux:6::client
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox-debuginfo
Red Hat:enterprise_linux:6::client
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner
Red Hat:enterprise_linux:6::client
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-debuginfo
Red Hat:enterprise_linux:6::client
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-devel
Red Hat:enterprise_linux:6::client
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox-debuginfo
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-debuginfo
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-devel
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox
Red Hat:enterprise_linux:6::server
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner
Red Hat:enterprise_linux:6::server
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-devel
Red Hat:enterprise_linux:6::server
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-devel
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
MozillaFirefox
openSUSE:Tumbleweed
 before 50.1.0-1.1
50.1.0-1.1
firefox-esr
openSUSE:Tumbleweed
 before 128.5.1-1.1
128.5.1-1.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2012-4210 is a high vulnerability (CVSS 9.3) in Mozilla Firefox, published November 21, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.53%, the 89th percentile. Fixed in firefox 0:10.0.11-1.el5_8.

References

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