CVE-2019-17019

8.8 highEPSS 1.0%

High (8.8) in mozilla firefox. EPSS 1.0% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 64% of CVEs (scores of 2026-10-31)
Published: 2020-01-08
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mozilla:firefox

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1568003
https://www.mozilla.org/security/advisories/mfsa2020-01/
https://bugzilla.mozilla.org/show_bug.cgi?id=1568003
https://www.mozilla.org/security/advisories/mfsa2020-01/

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