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.
Published 2022-12-22 20:15:39
Updated 2025-04-15 15:15:59
View at NVD,   CVE.org

Products affected by CVE-2022-40959

Exploit prediction scoring system (EPSS) score for CVE-2022-40959

0.11%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 26 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-40959

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
2.8
3.6
134c704f-9b21-4f2e-91b3-4a467353bcc0 2025-04-15
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
2.8
3.6
NIST

CWE ids for CVE-2022-40959

  • The product stores sensitive information without properly limiting read or write access by unauthorized actors.
    Assigned by:
    • 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
    • nvd@nist.gov (Primary)

References for CVE-2022-40959

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