CVE-2022-45419

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% 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-295

Description

If the user added a security exception for an invalid TLS certificate, opened an ongoing TLS connection with a server that used that certificate, and then deleted the exception, Firefox would have kept the connection alive, making it seem like the certificate was still trusted. 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=1716082
https://www.mozilla.org/security/advisories/mfsa2022-47/
https://bugzilla.mozilla.org/show_bug.cgi?id=1716082
https://www.mozilla.org/security/advisories/mfsa2022-47/

Get alerted when CVE-2022-45419 or the next vulnerability affects your stack