Vulnerability in Mozilla Firefox

CVE-2022-40959

During iframe navigation, certain pages did not have their FeaturePolicy fully initialized leading to a bypass that leaked device permissions into untrusted subdocuments. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.

EPSS: 0.013 (67.1th 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:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2022-40959?
CVE-2022-40959 is a medium-severity vulnerability in Mozilla Firefox, classified under CWE-922. CVSS score: 6.5/10. Published 2022-12-22.
How severe is CVE-2022-40959?
Medium severity. CVSS v3 base score is 6.5 out of 10.