Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-43539

Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 66.1%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 6.8
References
Products affected by CVE-2021-43539


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