CVE-2024-7520

At a glance

Severity: HIGH 8.8
EPSS: EPSS 0.64 % · percentile 50 (2026-10-27)
State: PUBLISHED
Published: 2024-08-06
Updated: 2025-03-24
Assigner: mozilla
NVD status: Modified

Description

A type confusion bug in WebAssembly could be leveraged by an attacker to potentially achieve code execution. This vulnerability affects Firefox < 129, Firefox ESR < 128.1, and Thunderbird < 128.1.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CISA-ADP
CVSS 3.1	HIGH 8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)
CVSS 3.1	HIGH 8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Weaknesses (CWE)

European references

ENISA EUVD · EUVD-2024-48427
GCVE · GCVE-0-2024-7520

CERT-FR advisories

CERTFR-2024-AVI-0656 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* < 129.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* < 128.1.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* < 128.1.0

Affected products

Product	Versions
Mozilla · Firefox	affected unspecified < 129
Mozilla · Firefox ESR	affected unspecified < 128.1
Mozilla · Thunderbird	affected unspecified < 128.1

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