Vulnerability Intelligence Report
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-58289
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
No Active Exploit Signals
CVSS Base Score
9.0
CRITICAL
Exploitability:2.3
Impact Score:6.1
EPSS Probability:1.99%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-843 ↗CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) | 1.0.0.0 < 150.0.4078.48 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
1.991%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2026-06-29T21:59:30 |
| Published | 2026-07-03T20:35:29 |
| Patch Date | 2026-07-03 |
| Last Updated | 2026-09-25T18:25:00 |
Community Chatter & Buzz