An integer overflow during the parsing of XML using the Expat library. This vulnerability affects Firefox < 50.
http://www.securityfocus.com/bid/94337
http://www.securitytracker.com/id/1037298
http://www.securitytracker.com/id/1039427
https://bugzilla.mozilla.org/show_bug.cgi?id=1274777
Source: MITRE
Published: 2018-06-11
Updated: 2018-07-30
Type: CWE-190
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9
Severity: CRITICAL