CVE-2022-45415

Name: CVE-2022-45415
Creator: NVD / NIST
Published: 2022-12-22T20:15:44.137+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.23%

Last modified Jun 17, 2026

CVE-2022-45415 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. When downloading an HTML file, if the title of the page was formatted as a filename with a malicious extension, Firefox may have saved the file with that extension, leading to possible system compromise if the downloaded file was later ran. This vulnerability affects Firefox < 107.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

When downloading an HTML file, if the title of the page was formatted as a filename with a malicious extension, Firefox may have saved the file with that extension, leading to possible system compromise if the downloaded file was later ran. This vulnerability affects Firefox < 107.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.23%

13.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 107.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1793551Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-47/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1793551Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-47/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1793551Issue Tracking, Permissions Required, Vendor Advisory

Timeline

Published: Dec 22, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-45415?

How severe is CVE-2022-45415?

CVE-2022-45415 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2022-45415?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-45415?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST