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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 properly restrict the context of HTML…
- 9.3HighCVSS base score
- 3.5%Exploitation in 30 daysEPSS · top 11% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By mitre
- 4 months later
· 4 months later
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 3.5% · top 11% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 9.3.
Affected products
n/a
- affected n/a
References
19
- USN-1638-3 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-1638-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- firefox-style-inspector-priv-esc(80182) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- openSUSE-SU-2012:1586 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2013:0175 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 56646 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://www.palemoon.org/releasenotes-ng.shtml (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2012:1482 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 51434 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- openSUSE-SU-2012:1583 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 51439 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:16833 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- USN-1638-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://www.mozilla.org/security/announce/2012/mfsa2012-104.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- SUSE-SU-2012:1592 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 51359 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- MDVSA-2012:173 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- 51369 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=796866 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2012-4154 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2012-4210)Record last updated .