CVE-2024-38209

Code execution via undisclosed type confusion

Published Aug 22, 2024 · Updated Jul 10, 2025

Type confusion in Microsoft Edge (Chromium-based) before 128.0.2739.42 allows attackers to execute code after user interaction. Microsoft identifies incompatible-type resource access but has not disclosed the affected component, object conversion, or input path. Exploitation requires user interaction and local access; the disclosed consequence is arbitrary code execution, with no public component-level detail.

CVSS severity7.8
High
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in Microsoft Edge (Chromium-based) before 128.0.2739.42 allows attackers to execute code after user interaction. Microsoft identifies incompatible-type resource access but has not disclosed the affected component, object conversion, or input path. Exploitation requires user interaction and local access; the disclosed consequence is arbitrary code execution, with no public component-level detail.

The record

CVE
CVE-2024-38209
Published
Aug 22, 2024
Updated
Jul 10, 2025
Vendor
Microsoft
Product
Microsoft Edge (Chromium-based)
Classifications
CWE-843, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <128.0.2739.42

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Edge (Chromium-based)version=1.0.0 <128.0.2739.42

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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