What is CVE-2022-45419?

CVE-2022-45419 is a medium-severity vulnerability in Mozilla Firefox, classified under Improper Certificate Validation. CVSS score: 6.5/10. Published 2022-12-22.

How severe is CVE-2022-45419?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Mozilla Firefox

CVE-2022-45419

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.

Vulnerability class: Improper Certificate Validation

EPSS: 0.004 (29.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

Mozilla Firefox — versions unspecified

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

security@mozilla.org (Vendor Advisory)
security@mozilla.org (Permissions Required, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2022-45419?: CVE-2022-45419 is a medium-severity vulnerability in Mozilla Firefox, classified under Improper Certificate Validation. CVSS score: 6.5/10. Published 2022-12-22.
How severe is CVE-2022-45419?: Medium severity. CVSS v3 base score is 6.5 out of 10.