CVE-2020-12387
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2020-12387
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-12387.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2020-12387
- Downstream
- Related
- Published
- 2020-05-26T18:15:10Z
- Modified
- 2025-08-09T20:01:25Z
- Severity
-
- 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
- References
-
- https://security.gentoo.org/glsa/202005-03
- https://security.gentoo.org/glsa/202005-04
- https://www.mozilla.org/security/advisories/mfsa2020-16/
- https://www.mozilla.org/security/advisories/mfsa2020-17/
- https://www.mozilla.org/security/advisories/mfsa2020-18/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1545345
- https://usn.ubuntu.com/4373-1/