What is CVE-2024-3858?

CVE-2024-3858 is a high-severity vulnerability in Mozilla Firefox, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2024-04-16.

How severe is CVE-2024-3858?

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

Is CVE-2024-3858 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

NULL pointer dereference in Mozilla Firefox

CVE-2024-3858

It was possible to mutate a JavaScript object so that the JIT could crash while tracing it. This vulnerability affects Firefox < 125.

EPSS: 0.006 (43.7th 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-476 — NULL Pointer Dereference

Public proof-of-concept exploits

References

security@mozilla.org (Issue Tracking)
security@mozilla.org (Vendor Advisory)

Frequently asked questions

What is CVE-2024-3858?: CVE-2024-3858 is a high-severity vulnerability in Mozilla Firefox, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2024-04-16.
How severe is CVE-2024-3858?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2024-3858 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.