CVE-2026-66314

Microsoft Edge (Chromium-based) Information Disclosure Vulnerability

En bref

Sévérité: MEDIUM 6.5
EPSS: EPSS 0.57 % · centile 47 (2026-10-27)
État: PUBLISHED
Publiée: 2026-08-03
Mise à jour: 2026-10-28
Attribuée par: microsoft
Statut NVD: Analyzed

Description

Time-of-check time-of-use (toctou) race condition in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.

Scores

Version	Score	Vecteur	Évalué par
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C	microsoft
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	NVD · secure@microsoft.com (Secondary)
CVSS 3.1	MEDIUM 5.3	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N	NVD · nvd@nist.gov (Primary)

Faiblesses (CWE)

CWE-367

Références européennes

ENISA EUVD · EUVD-2026-52526
GCVE · GCVE-0-2026-66314

Avis du CERT-FR

CERTFR-2026-AVI-0960 — Multiples vulnérabilités dans Microsoft Edge · cert.ssi.gouv.fr

Configurations affectées (CPE NVD)

cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:* < 151.0.4129.59

Produits affectés

Produit	Versions
Microsoft · Microsoft Edge (Chromium-based)	affected 1.0.0.0 < 151.0.4129.59

Références

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66314

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