CVE-2019-9821

EPSS 0.9%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.9%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

23 Jul 2019Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

Affected products

Mozilla · Firefox

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References

https://bugzilla.mozilla.org/show_bug.cgi?id=1539125 https://www.mozilla.org/security/advisories/mfsa2019-13/