CVE-2018-12390

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

Mozilla developers and community members reported memory safety bugs present in Firefox 62 and Firefox ESR 60.2. 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 < 63, Firefox ESR < 60.3, and Thunderbird < 60.3.

Metrics

CVSS 3.0 9.8/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-119

Affected software

VendorProductVersions
MozillaFirefox>= unspecified, < 63
MozillaFirefox ESR>= unspecified, < 60.3
MozillaThunderbird>= unspecified, < 60.3

References

Timeline

Published
Feb 28, 2019
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2018-12390: Critical severity, CVSS 9.8 | Vulnix