What is CVE-2024-10004?

CVE-2024-10004 is a critical-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 9.1/10. Published 2024-10-15.

How severe is CVE-2024-10004?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Mozilla Firefox

CVE-2024-10004

Opening an external link to an HTTP website when Firefox iOS was previously closed and had an HTTPS tab open could in some cases result in the padlock icon showing an HTTPS indicator incorrectly This vulnerability affects Firefox for iOS < 131.2.

Published 2024-10-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (29.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.6% 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

Mozilla Firefox
Mozilla Firefox For iOS — versions unspecified

Weakness classification (CWE)

CWE-1021 — Improper Restriction of Rendered UI Layers or Frames (Clickjacking)

References

bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking)
www.mozilla.org/security/advisories/mfsa2024-54/ (Vendor Advisory)

Frequently asked questions

What is CVE-2024-10004?: CVE-2024-10004 is a critical-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 9.1/10. Published 2024-10-15.
How severe is CVE-2024-10004?: Critical severity. CVSS v3 base score is 9.1 out of 10.