What is CVE-2024-3856?

CVE-2024-3856 is a high-severity vulnerability in Mozilla Firefox, classified under Use After Free. CVSS score: 8.8/10. Published 2024-04-16.

How severe is CVE-2024-3856?

High severity. CVSS v3 base score is 8.8 out of 10.

Use After Free in Mozilla Firefox

CVE-2024-3856

A use-after-free could occur during WASM execution if garbage collection ran during the creation of an array. This vulnerability affects Firefox < 125.

Vulnerability class: Use-After-Free

EPSS: 0.006 (45.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Mozilla Firefox — versions unspecified

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2024-3856?: CVE-2024-3856 is a high-severity vulnerability in Mozilla Firefox, classified under Use After Free. CVSS score: 8.8/10. Published 2024-04-16.
How severe is CVE-2024-3856?: High severity. CVSS v3 base score is 8.8 out of 10.