Memory safety bugs were reported in Firefox 54. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 55.
http://www.securitytracker.com/id/1039124
http://www.securityfocus.com/bid/100199
https://www.mozilla.org/security/advisories/mfsa2017-18/
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1353763%2C1353356%2C1370070%2C1375435%2C1373663%2C1363150%2C1370817%2C1273678%2C1367850%2C1347968%2C1361749%2C1349138%2C1371982%2C1344666%2C1369836%2C1330739%2C1371511%2C1371484
Source: Mitre, NVD
Published: 2018-06-11
Updated: 2024-11-21
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
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
Severity: Critical
EPSS: 0.03948