CVE-2026-58289

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

At a glance

Severity: CRITICAL 9.0
EPSS: EPSS 1.99 % · percentile 81 (2026-10-28)
State: PUBLISHED
Published: 2026-07-03
Updated: 2026-10-28
Assigner: microsoft
NVD status: Analyzed

Description

Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	CRITICAL 9.0	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft
CVSS 3.1	CRITICAL 9.0	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H	NVD · secure@microsoft.com (Secondary)
CVSS 3.1	HIGH 8.3	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-843

European references

ENISA EUVD · EUVD-2026-41586
GCVE · GCVE-0-2026-58289

CERT-FR advisories

CERTFR-2026-AVI-0840 — Multiples vulnérabilités dans Microsoft Edge · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:-:*:*:* < 150.0.4078.48

Affected products

Product	Versions
Microsoft · Microsoft Edge (Chromium-based)	affected 1.0.0.0 < 150.0.4078.48

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58289

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