Vulnerability Database

314,433

Total vulnerabilities in the database

CVE-2019-9821

A use-after-free vulnerability can occur in AssertWorkerThread due to a race condition with shared workers. This results in a potentially exploitable crash. This vulnerability affects Firefox < 67.

  • Published: Jul 23, 2019
  • Updated: Nov 9, 2025
  • CVE: CVE-2019-9821
  • Severity: Medium
  • Exploit:

CVSS v2:

  • Severity: Medium
  • Score: 6.8
  • AV:N/AC:M/Au:N/C:P/I:P/A:P

CWEs:

Software From Fixed in
mozilla / firefox - 67.0