CVE-2024-38221Network attack vector

Content spoofing via undisclosed page-generation flaw

Published Sep 19, 2024 · Updated Aug 10, 2026

Cross-site scripting in Microsoft Edge (Chromium-based) before 129.0.2792.52 allows remote attackers to spoof displayed content. Microsoft has not published the affected component or explained how untrusted web content reaches an improperly neutralized page-generation sink. Exploitation requires user interaction and can alter displayed content, with no reported data disclosure or service interruption.

CVSS severity4.3
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Microsoft Edge (Chromium-based) before 129.0.2792.52 allows remote attackers to spoof displayed content. Microsoft has not published the affected component or explained how untrusted web content reaches an improperly neutralized page-generation sink. Exploitation requires user interaction and can alter displayed content, with no reported data disclosure or service interruption.

The record

CVE
CVE-2024-38221
Published
Sep 19, 2024
Updated
Aug 10, 2026
Vendor
Microsoft
Product
Microsoft Edge (Chromium-based)
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record 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 <129.0.2792.52

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Edge (Chromium-based)version=1.0.0 <129.0.2792.52

Published CVSS scores

4.3MicrosoftCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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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