CVE-2019-11709: Debian Linux

Critical severity, CVSS 9.8. EPSS: 2.3% chance of exploitation in the next 30 days.

Mozilla developers and community members reported memory safety bugs present in Firefox 67 and Firefox ESR 60.7. 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 ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

Affected products

• Debian Debian Linux: version 8.0 only
• Mozilla Firefox: before 60.8.0 (fixed in 60.8.0); before 68.0 (fixed in 68.0)
• Mozilla Thunderbird: before 60.8.0 (fixed in 60.8.0)
• Opensuse Leap: version 15.0 only; version 15.1 only
• Suse Package Hub: affected versions not specified

Published 2019-07-23. Last modified 2026-06-17.