CVE-2024-43461Known exploitationPublic exploitNetwork attack vector

Code execution via concealed HTA file extension

Published Sep 10, 2024 · Updated Aug 10, 2026

UI spoofing in Microsoft Windows MSHTML allows remote attackers to disguise a malicious HTA file as a PDF through a crafted filename. Internet Explorer’s download prompt truncates a name padded with encoded Braille blanks, pushing the true .hta extension out of view. A user must open the disguised file; its script then executes with the user’s privileges and can install malware.

CVSS severity8.8
High
EPSS probability54.49%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UI spoofing in Microsoft Windows MSHTML allows remote attackers to disguise a malicious HTA file as a PDF through a crafted filename. Internet Explorer’s download prompt truncates a name padded with encoded Braille blanks, pushing the true .hta extension out of view. A user must open the disguised file; its script then executes with the user’s privileges and can install malware.

The record

CVE
CVE-2024-43461
Published
Sep 10, 2024
Updated
Aug 10, 2026
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
CWE-451, T1204.002, T1036
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 10, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=10.0.10240.0 <10.0.10240.20766

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.20766
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.6293
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.7336
Microsoft · Windows 11, version 24H2version=10.0.26100.0 <10.0.26100.1742
Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.3197
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.25073
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.25073
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19044.4894
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.1128
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.7336
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22631.4169
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.27320
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.27320
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.4894
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.22175
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.6293
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.4169
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.4169
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.7336
Microsoft · Windows Server 2008 Service Pack 2version=6.0.6003.0 <6.0.6003.22870
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.2700
Microsoft · Windows 10 Version 1809version=10.0.17763.0 <10.0.17763.6293
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.22175
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)version=6.0.6003.0 <6.0.6003.22870

Published CVSS scores

8.8Microsoft CorporationCVSS:3.1/AV:N/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.

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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 exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-451User Interface (UI) Misrepresentation of Critical Information
T1204.002Malicious File
T1036Masquerading

Public exploit references

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

Reported exploitation

Technologies

Your stack

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Your stack

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