Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152 (Mozilla Firefox)

CVE-2026-12328

HIGH 8.1

En bref

Source: NVD
EPSS: EPSS 0.48 % · centile 41 (2026-10-31)
État: PUBLISHED
Publiée: 2026-06-16 11:53 UTC
Mise à jour: 2026-07-15 11:48 UTC
Attribuée par: mozilla
Statut NVD: Modified

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Description

Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

Faiblesses (CWE)

CWE-120 — Copie de tampon sans vérification de taille (débordement classique)
CWE-825 — Expired Pointer Dereference

Références

Scores

Version	Score	Vecteur	Évalué par
CVSS 3.1	HIGH 8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H	redhat-SADP
CVSS 3.1	HIGH 8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H	NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary)

Références européennes

ENISA EUVD · EUVD-2026-37074
GCVE · GCVE-0-2026-12328

Avis du CERT-FR

CERTFR-2026-AVI-0764 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr

Configurations affectées (CPE NVD)

cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* < 115.37.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* < 152.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* ≥ 140.0 < 140.12.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:* < 152.0.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:* ≥ 140.0 < 140.12.0

Produits affectés

Produit	Versions
Mozilla · Firefox	unaffected 115.37 ≤ 115.* ; unaffected 140.12 ≤ 140.* ; unaffected 152 ≤ *
Mozilla · Thunderbird	unaffected 140.12 ≤ 140.* ; unaffected 152 ≤ *

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

⚠️ Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152 (Mozilla Firefox)