CVE-2024-38177

User-assisted spoofing

Published Aug 13, 2024 · Updated Jul 10, 2025

Spoofing in Microsoft App Installer before 1.22.11261.0 allows attackers to cause an unspecified impact via unspecified vectors. Microsoft has not published the affected code locus or the improper output encoding or escaping operation that produces the spoofed content. Exploitation requires local access to an attack path and user interaction, while the vendor has not described the resulting data or service consequence.

CVSS severity7.8
High
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Spoofing in Microsoft App Installer before 1.22.11261.0 allows attackers to cause an unspecified impact via unspecified vectors. Microsoft has not published the affected code locus or the improper output encoding or escaping operation that produces the spoofed content. Exploitation requires local access to an attack path and user interaction, while the vendor has not described the resulting data or service consequence.

The record

CVE
CVE-2024-38177
Published
Aug 13, 2024
Updated
Jul 10, 2025
Vendor
Microsoft
Product
App Installer
Classifications
CWE-116, T1204
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 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=1.0.0.0 <1.22.11261.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · App Installerversion=1.0.0.0 <1.22.11261.0

Published CVSS scores

7.8MicrosoftCVSS: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-116Improper Encoding or Escaping of Output
T1204User 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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