EPSS
Percentile
64.7%
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.
bugzilla.redhat.com/show_bug.cgi?id=1712749
nvd.nist.gov/vuln/detail/CVE-2019-9821
www.cve.org/CVERecord?id=CVE-2019-9821
www.mozilla.org/en-US/security/advisories/mfsa2019-13/#CVE-2019-9821