Back
CVE-2020-12418
Manipulating individual parts of a URL object could have caused an out-of-bounds read, leaking process memory to malicious JavaScript.…
Medium6.5EPSS 3.0%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
Manipulating individual parts of a URL object could have caused an out-of-bounds read, leaking process memory to malicious JavaScript. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 3.0% · top 12% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
- Information disclosure due to manipulated URL object
- CWE-125 (opens in a new tab)All about CWE-125 and its CVEs
Affected products
- affected unspecified – < 68.10
- affected unspecified – < 78
- affected unspecified – < 68.10.0
References (11)
- https://www.mozilla.org/security/advisories/mfsa2020-24/ (opens in a new tab)x_refsource_MISCx_transferred
- https://www.mozilla.org/security/advisories/mfsa2020-26/ (opens in a new tab)x_refsource_MISCx_transferred
- https://www.mozilla.org/security/advisories/mfsa2020-25/ (opens in a new tab)x_refsource_MISCx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=1641303 (opens in a new tab)x_refsource_MISCx_transferred
- openSUSE-SU-2020:0967 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2020:0982 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2020:0983 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2020:1017 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- USN-4421-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- GLSA-202007-09 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- GLSA-202007-10 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_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-2020-12418)Record last updated .