CVE-2021-38510

HIGH

Firefox <94, Thunderbird <91.3, Firefox ESR <91.3 - Code Injection

Title source: llm
STIX 2.1

Description

The executable file warning was not presented when downloading .inetloc files, which, due to a flaw in Mac OS, can run commands on a user's computer.*Note: This issue only affected Mac OS operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

References (4)

Core 4
Core References
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1731779

Scores

CVSS v3 8.8
EPSS 0.0047
EPSS Percentile 64.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

Status published
Products (3)
mozilla/firefox < 94.0
mozilla/firefox_esr < 91.3.0
mozilla/thunderbird < 91.3.0
Published Dec 08, 2021
Tracked Since Feb 18, 2026