CVE-2024-29049

Content spoofing via undisclosed WebView2 input handling

Published Apr 4, 2024 · Updated May 3, 2025

Cross-site scripting in Microsoft Edge (Chromium-based) before 123.0.2420.81 allows local users to spoof displayed content after user interaction. Microsoft has not published the affected WebView2 code path or how it mishandles untrusted input. Exploitation requires interaction with attacker-controlled content, and the documented consequence is limited to low-impact content disclosure or modification rather than service interruption.

CVSS severity4.1
Medium
EPSS probability0.66%
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 123.0.2420.81 allows local users to spoof displayed content after user interaction. Microsoft has not published the affected WebView2 code path or how it mishandles untrusted input. Exploitation requires interaction with attacker-controlled content, and the documented consequence is limited to low-impact content disclosure or modification rather than service interruption.

The record

CVE
CVE-2024-29049
Published
Apr 4, 2024
Updated
May 3, 2025
Vendor
Microsoft
Product
Microsoft Edge (Chromium-based)
Classifications
CWE-79
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 4, 2024CVE publishedPublication date reported by the CVE source.
  2. May 3, 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 <122.0.2365.120
  2. Affected versionversion=1.0.0 <123.0.2420.81

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Edge (Chromium-based)version=1.0.0 <122.0.2365.120; version=1.0.0 <123.0.2420.81

Published CVSS scores

4.7NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
4.1Microsoft CorporationCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
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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