CVE-2020-12405
Mozilla: Use-after-free in SharedWorkerService
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Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 2, 2020
Updated · November 22, 2025
Description
The Mozilla Foundation Security Advisory describes this flaw as:
When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.3CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-416 · Use After Free