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Public proof of conceptFix available

CVE-2026-58289

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

A public proof of concept exists; no exploitation attested.

  • Published2026-07-03
  • Fixed in150.0.4078.48
  • WeaknessCWE-843

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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

Timeline

dates in UTC
  1. 2026-07-0320:35CVE publishedCNA
  2. 2026-08-10Exploit-DB entryExploit-DB

Versions per branch

NVD
Microsoft edge chromium
BranchAffectedFixed in
150.0< 150.0.4078.48150.0.4078.48

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As microsoft, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Microsoft Edge (Chromium-based)
    Affected
    • ≥ 1.0.0.0, < 150.0.4078.48fixed in 150.0.4078.48custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-28

Fix

  1. Update Microsoft edge chromium to 150.0.4078.48

Advisories and patches

Detection

read 2026-11-10 09:41 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-52632
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Published
2026-07-03
Last Modified
2026-10-25
NVD status
Analyzed
GitHub Advisory
GHSA-39f3-ggrp-rph3

Frequently asked questions

What is 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.

Is CVE-2026-58289 actively exploited?

Active exploitation of CVE-2026-58289 has not been confirmed. Its EPSS score was 2.0% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-58289?

CVE-2026-58289 has a CVSS v3 base score of 8.3 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.

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