What is CVE-2022-45407?

CVE-2022-45407 is a high-severity vulnerability in Mozilla Firefox, classified under Use After Free. CVSS score: 7.5/10. Published 2022-12-22.

How severe is CVE-2022-45407?

High severity. CVSS v3 base score is 7.5 out of 10.

Use After Free in Mozilla Firefox

CVE-2022-45407

If an attacker loaded a font using <code>FontFace()</code> on a background worker, a use-after-free could have occurred, leading to a potentially exploitable crash. This vulnerability affects Firefox < 107.

Vulnerability class: Use-After-Free

EPSS: 0.006 (46.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mozilla Firefox — versions unspecified

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2022-45407?: CVE-2022-45407 is a high-severity vulnerability in Mozilla Firefox, classified under Use After Free. CVSS score: 7.5/10. Published 2022-12-22.
How severe is CVE-2022-45407?: High severity. CVSS v3 base score is 7.5 out of 10.