Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2019-9815

If hyperthreading is not disabled, a timing attack vulnerability exists, similar to previous Spectre attacks. Apple has shipped macOS 10.14.5 with an option to disable hyperthreading in applications running untrusted code in a thread through a new sysctl. Firefox now makes use of it on the main thread and any worker threads. *Note: users need to update to macOS 10.14.5 in order to take advantage of this change.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.01
EPSS Ranking 76.2%
CVSS Severity
CVSS v3 Score 8.1
CVSS v2 Score 6.8
Products affected by CVE-2019-9815


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