CVE-2024-6603

Memory corruption in thread creation

HIGH 7.4

At a glance

Source: NVD
EPSS: EPSS 0.54 % · percentile 45 (2026-10-28)
State: PUBLISHED
Published: 2024-07-09 14:25 UTC
Updated: 2025-10-30 16:14 UTC
Assigner: mozilla
NVD status: Analyzed

Description

In an out-of-memory scenario an allocation could fail but free would have been called on the pointer afterwards leading to memory corruption. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.

Weaknesses (CWE)

CWE-823 — Use of Out-of-range Pointer Offset

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.4	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N	CISA-ADP
CVSS 3.1	HIGH 7.4	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

European references

ENISA EUVD · EUVD-2024-47665
GCVE · GCVE-0-2024-6603

CERT-FR advisories

CERTFR-2024-AVI-0588 — Multiples vulnérabilités dans Mozilla Thunderbird · cert.ssi.gouv.fr
CERTFR-2024-AVI-0555 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* < 115.13
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* < 128.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* < 115.13
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* ≥ 116.0 < 128.0

Affected products

Product	Versions
Mozilla · Firefox	affected unspecified < 128
Mozilla · Firefox ESR	affected unspecified < 115.13
Mozilla · Thunderbird	affected unspecified < 115.13
Mozilla · Thunderbird	affected unspecified < 128

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