EPSS
Percentile
99.0%
Mozilla is vulnerable to denial of service (DoS). The vulnerability exists through write side effects in MCallGetProperty opcode, which is not accounted for.
MCallGetProperty
packetstormsecurity.com/files/166175/Firefox-MCallGetProperty-Write-Side-Effects-Use-After-Free.html
access.redhat.com/errata/RHSA-2020:5104
access.redhat.com/security/updates/classification/#critical
bugzilla.mozilla.org/show_bug.cgi?id=1675905
www.mozilla.org/security/advisories/mfsa2020-49/