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CVE-2012-1947
Heap-based buffer overflow in the utf16_to_isolatin1 function in Mozilla Firefox 4.x through 12.0, Firefox ESR 10.x before 10.0.5,…
High9.3EPSS 4.6%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Heap-based buffer overflow in the utf16_to_isolatin1 function in Mozilla Firefox 4.x through 12.0, Firefox ESR 10.x before 10.0.5, Thunderbird 5.0 through 12.0, Thunderbird ESR 10.x before 10.0.5, and SeaMonkey before 2.10 allows remote attackers to execute arbitrary code via vectors that trigger a character-set conversion failure.
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)
- 4.6% · top 8.4% of all CVEs (3 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.
Weakness
Affected products
n/a
- affected n/a
References (10)
- MDVSA-2012:088 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- DSA-2488 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- oval:org.mitre.oval:def:16911 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- RHSA-2012:0710 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://www.mozilla.org/security/announce/2012/mfsa2012-40.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- SUSE-SU-2012:0746 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2012:0760 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- DSA-2489 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- RHSA-2012:0715 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=744541 (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)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2012-1947)Record last updated .