CVE-2019-17019

HIGH

Firefox < 72.0 - Unauthenticated Arbitrary Code Execution via Python File MIME Handling

Title source: llm
STIX 2.1

Description

When Python was installed on Windows, a python file being served with the MIME type of text/plain could be executed by Python instead of being opened as a text file when the Open option was selected upon download. *Note: this issue only occurs on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 72.

References (2)

Core 2
Core References
Permissions Required x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1568003
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2020-01/

Scores

CVSS v3 8.8
EPSS 0.0048
EPSS Percentile 65.2%
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 (1)
mozilla/firefox < 72.0
Published Jan 08, 2020
Tracked Since Feb 18, 2026