CVE-2024-9399

At a glance

Severity: HIGH 7.5
EPSS: EPSS 0.50 % · percentile 42 (2026-10-27)
State: PUBLISHED
Published: 2024-10-01
Updated: 2025-03-14
Assigner: mozilla
NVD status: Modified

Description

A website configured to initiate a specially crafted WebTransport session could crash the Firefox process leading to a denial of service condition. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · nvd@nist.gov (Primary)
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Weaknesses (CWE)

CWE-404

European references

ENISA EUVD · EUVD-2024-49914
GCVE · GCVE-0-2024-9399

CERT-FR advisories

CERTFR-2024-AVI-0829 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* < 128.3.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* ≥ 129.0 < 131.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* < 128.3.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* ≥ 129.0 < 131.0

Affected products

Product	Versions
Mozilla · Firefox	affected unspecified < 131
Mozilla · Firefox ESR	affected unspecified < 128.3
Mozilla · Thunderbird	affected unspecified < 128.3
Mozilla · Thunderbird	affected unspecified < 131

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD