0.004 Low
EPSS
Percentile
73.5%
An out-of-bounds read occurs when applying style rules to pseudo-elements, such as ::first-line, using cached style data. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
bugzilla.redhat.com/show_bug.cgi?id=1479188
www.mozilla.org/en-US/security/advisories/mfsa2017-19/#CVE-2017-7753