CVE-2022-45415

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-12-22 · updated 2026-06-17
Weakness: CWE-434

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.

Affected products

Mozilla Firefox: before 107.0 — fixed in 107.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 107.0. Check the vendor advisory for mitigations.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1793551
https://www.mozilla.org/security/advisories/mfsa2022-47/
https://bugzilla.mozilla.org/show_bug.cgi?id=1793551
https://www.mozilla.org/security/advisories/mfsa2022-47/
https://bugzilla.mozilla.org/show_bug.cgi?id=1793551

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