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CVE-2018-12386
A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to…
High8.1EPSS 13.5%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High8.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 13.5% · top 3.5% of all CVEs (5 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Weakness
- Type confusion in JavaScript
- CWE-704 (opens in a new tab)All about CWE-704 and its CVEs
Affected products
- affected unspecified – < 60.2.2
- affected unspecified – < 62.0.3
References (9)
- GLSA-201810-01 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- 105460 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- USN-3778-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- DSA-4310 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- RHSA-2018:2884 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 1041770 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=1493900 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.mozilla.org/security/advisories/mfsa2018-24/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2018:2881 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_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)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2018-12386)Record last updated .