CVE-2026-113400

CVE-2026-113400

Uninitialized memory in the Audio/Video: cubeb component. This vulnerability was fixed in Firefox 158.0.1.

Published 2026-10-20 · last modified 2026-10-20.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Weakness classification (CWE)

CWE-457

References

Frequently asked questions

What is CVE-2026-113400?: CVE-2026-113400 is a medium-severity vulnerability, classified under CWE-457. CVSS score: 5.4/10. Published 2026-10-20.
How severe is CVE-2026-113400?: Medium severity. CVSS v3 base score is 5.4 out of 10.