CVE-2020-15663

If Firefox is installed to a user-writable directory, the Mozilla Maintenance Service would execute updater.exe from the install location with system privileges. Although the Mozilla Maintenance Service does ensure that updater.exe is signed by Mozilla, the version could have been rolled back to a previous version which would have allowed exploitation of an older bug and arbitrary code execution with System Privileges. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 80, Thunderbird < 78.2, Thunderbird < 68.12, Firefox ESR < 68.12, and Firefox ESR < 78.2.

Affected products

Alt Linux, Firefox, Firefox Esr, Suse, Thunderbird

Mozilla Firefox

< 80.0, 78.2

Mozilla Firefox Esr

< 68.12

Mozilla Thunderbird

< 68.12, 78.2

Fix

Available

CVSS 2.0

9.3 HIGH

CVSS 3.1

8.8 HIGH

EPSS

2.7% (85th percentile)

Weakness

CWE-427

NVD status

Modified

Published

2020-10-01

No exploit for CVE-2020-15663 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.