What is CVE-2024-31392?

CVE-2024-31392 is a high-severity vulnerability in Apple Iphone OS. CVSS score: 7.5/10. Published 2024-04-03.

How severe is CVE-2024-31392?

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

Vulnerability in Apple Iphone OS

CVE-2024-31392

If an insecure element was added to a page after a delay, Firefox would not replace the secure icon with a mixed content security status This vulnerability affects Firefox for iOS < 124.

Published 2024-04-03 · last modified 2026-06-17.

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:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (30.6th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Apple Iphone OS
Mozilla Firefox
Mozilla Firefox For iOS — versions unspecified

References

bugzilla.mozilla.org/show_bug.cgi (Issue Tracking)
www.mozilla.org/security/advisories/mfsa2024-17/ (Vendor Advisory)

Frequently asked questions

What is CVE-2024-31392?: CVE-2024-31392 is a high-severity vulnerability in Apple Iphone OS. CVSS score: 7.5/10. Published 2024-04-03.
How severe is CVE-2024-31392?: High severity. CVSS v3 base score is 7.5 out of 10.