Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-38493

Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.14, Thunderbird < 78.14, and Firefox < 92.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 42.5%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 6.8
Products affected by CVE-2021-38493


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