CVE-2024-43461
published 2024-09-10CVE-2024-43461: Windows MSHTML Platform Spoofing Vulnerability Windows MSHTML Platform Spoofing Vulnerability
high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
KEVITW
CISA Known Exploited Vulnerabilitydue 2024-10-07
Exploited in the wild
EPSS
51.88%
98.8th percentile
Windows MSHTML Platform Spoofing Vulnerability
Windows MSHTML Platform Spoofing Vulnerability
Affected
33 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.20766 | 10.0.10240.20766 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.7336 | 10.0.14393.7336 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.6293 | 10.0.17763.6293 |
| microsoft | windows_10_version_21h2 | >= 10.0.19043.0 < 10.0.19044.4894 | 10.0.19044.4894 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.4894 | 10.0.19045.4894 |
| microsoft | windows_11_version_21h2 | >= 10.0.0 < 10.0.22000.3197 | 10.0.22000.3197 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.4169 | 10.0.22621.4169 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.4169 | 10.0.22631.4169 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.4169 | 10.0.22631.4169 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.1742 | 10.0.26100.1742 |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.27320 | 6.1.7601.27320 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.22870 | 6.0.6003.22870 |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.25073 | 6.2.9200.25073 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.22175 | 6.3.9600.22175 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.7336 | 10.0.14393.7336 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.6293 | 10.0.17763.6293 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.2700 | 10.0.20348.2700 |
| msrc | windows_10 | — | — |
| msrc | windows_10_version_1607 | — | — |
| msrc | windows_10_version_1809 | — | — |
| msrc | windows_10_version_21h2 | — | — |
| msrc | windows_10_version_22h2 | — | — |
| msrc | windows_11_version_21h2 | — | — |
| msrc | windows_11_version_22h2 | — | — |
| msrc | windows_11_version_23h2 | — | — |
Detection & IOCsextracted from sources · hover to see the quote
filenameBooks_A0UJKO.pdf%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80%E2%A0%80.hta↗
- →Hunt for HTA files whose names contain sequences of 26 repeated encoded braille whitespace characters (%E2%A0%80) between a spoofed extension (e.g. .pdf) and the real .hta extension — this is the exact obfuscation pattern used in CVE-2024-43461 exploitation. ↗
- →Detect Windows Internet Shortcut files (.url extension) that force Internet Explorer to open attacker-controlled URLs — these were used as the initial delivery vector chained with CVE-2024-43461. ↗
- →Monitor for HTA file downloads and subsequent execution via Internet Explorer's file-open prompt, particularly where the displayed filename ends in '...' — this indicates the .hta extension is being pushed out of the UI by whitespace padding. ↗
- →Alert on the download and execution of HTA files that arrive disguised as PDF documents, as this was the payload delivery mechanism for the Atlantida info-stealer in CVE-2024-43461 exploitation. ↗
- →CVE-2024-43461 was exploited as part of a two-CVE chain with CVE-2024-38112; detections should correlate .url file execution (CVE-2024-38112) followed by HTA download/execution (CVE-2024-43461) as a combined attack sequence. ↗
- ·Patching CVE-2024-43461 alone is insufficient — both the July 2024 (CVE-2024-38112) and September 2024 (CVE-2024-43461) security updates must be applied to fully break the attack chain. ↗
- ·The September 2024 patch does not strip the braille whitespace from filenames; it only ensures the real .hta extension is shown. Users may still be confused by the long whitespace padding into thinking the file is a PDF. ↗
- ·The MSHTML platform remains active and in scope even on systems where Internet Explorer 11 has been retired, because it is used by IE Mode in Edge and via the WebBrowser control in other applications. ↗
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
cvelistv58.8HIGH
vulncheck7.5HIGH
cisa7.5HIGH
vendor_msrc8.8HIGH
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CVEList
Windows MSHTML Platform Spoofing Vulnerability
cvelistv5·2024-09-10·CVSS 8.8
CVE-2024-43461 [HIGH] CWE-451 Windows MSHTML Platform Spoofing Vulnerability
Windows MSHTML Platform Spoofing Vulnerability
Windows MSHTML Platform Spoofing Vulnerability
VulnCheck
Microsoft Windows MSHTML Platform Spoofing Vulnerability
vulncheck·2024·CVSS 7.5
CVE-2024-43461 [HIGH] CWE-451 Microsoft Windows MSHTML Platform Spoofing Vulnerability
Microsoft Windows MSHTML Platform Spoofing Vulnerability
Microsoft Windows MSHTML Platform contains a user interface (UI) misrepresentation of critical information vulnerability that allows an attacker to spoof a web page. This vulnerability was exploited in conjunction with CVE-2024-38112.
Affected: Microsoft Windows
Required Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Exploitation References: https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2024-Sep; https://www.zerodayinitiative.com/blog/2024/9/10/the-september-2024-security-update-review; https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2024-43461; https://www.bleepingcomputer.com/news/security/windows-vulnerability-abused-braille-spaces-in-zero-day-atta
CISA
Microsoft Windows MSHTML Platform Spoofing Vulnerability
cisa·2024-09-16·CVSS 7.5
CVE-2024-43461 [HIGH] CWE-451 Microsoft Windows MSHTML Platform Spoofing Vulnerability
Vulnerability: Microsoft Windows MSHTML Platform Spoofing Vulnerability
Affected: Microsoft Windows
Microsoft Windows MSHTML Platform contains a user interface (UI) misrepresentation of critical information vulnerability that allows an attacker to spoof a web page. This vulnerability was exploited in conjunction with CVE-2024-38112.
Required Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43461 ; https://nvd.nist.gov/vuln/detail/CVE-2024-43461
Remediation Due Date: 2024-10-07
Microsoft
Windows MSHTML Platform Spoofing Vulnerability
vendor_msrc·2024-09-10·CVSS 8.8
CVE-2024-43461 [HIGH] CWE-451 Windows MSHTML Platform Spoofing Vulnerability
Windows MSHTML Platform Spoofing Vulnerability
FAQ: The Security Updates table indicates that this vulnerability affects all supported versions of Microsoft Windows. Why are IE Cumulative updates listed for Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2?
While Microsoft has announced retirement of the Internet Explorer 11 application on certain platforms and the Microsoft Edge Legacy application is deprecated, the underlying MSHTML, EdgeHTML, and scripting platforms are still supported. The MSHTML platform is used by Internet Explorer mode in Microsoft Edge as well as other applications through WebBrowser control. The EdgeHTML platform is used by WebView and some UWP applications. The scripting platforms are used by MSHTML and EdgeHTML but can
No detection rules found.
No public exploits indexed.
Bleepingcomputer
New Windows zero-day exploited by 11 state hacking groups since 2017
blogs_bleepingcomputer·2025-03-18
New Windows zero-day exploited by 11 state hacking groups since 2017
## New Windows zero-day exploited by 11 state hacking groups since 2017
## Sergiu Gatlan
A Microsoft spokesperson was not immediately available for comment when contacted by BleepingComputer earlier today.
While Microsoft has yet to assign a CVE-ID to this vulnerability, Trend Micro is tracking it internally as ZDI-CAN-25373 and said it enables attackers to execute arbitrary code on affected Windows systems.
As the researchers found while investigating in-the-wild ZDI-CAN-25373 exploitation, the security flaw has been exploited in widespread attacks by many state-sponsored threat groups and cybercrime gangs , including Evil Corp, APT43 (Kimsuky), Bitter, APT37, Mustang Panda, SideWinder, RedHotel, Konni, and others.
Although the campaigns have targeted victims worldwide, they've been
Tenable
Microsoft Patch Tuesday 2024 Year in Review
blogs_tenable·2024-12-10
Microsoft Patch Tuesday 2024 Year in Review
## Cloud Exposure
Tenable Cloud Security (CNAPP) Request a demo
Tenable Cloud Vulnerability Management Request a demo
Tenable CIEM Request a demo
Secure your cloud
## Vulnerability Exposure
Tenable Vulnerability Management Try for free
Tenable Security Center Request a demo
Tenable Web App Scanning Try for free
Tenable Patch Management Request a demo
Tenable Enclave Security Request a demo
Tenable Attack Surface Management Request a demo
Tenable Nessus Try for free
## AI Exposure
Tenable AI Exposure Request a demo
## OT/IoT Exposure
Tenable OT Security Request a demo
## Identity Exposure
Tenable Identity Exposure Request a demo
## Business needs
Active Directory
AI Security Posture Management (AI-SPM)
AWS security
Azure security
Cloud Security Posture Man
Tenable
Microsoft’s October 2024 Patch Tuesday Addresses 117 CVEs (CVE-2024-43572, CVE-2024-43573)
blogs_tenable·2024-10-08·CVSS 7.8
[HIGH] Microsoft’s October 2024 Patch Tuesday Addresses 117 CVEs (CVE-2024-43572, CVE-2024-43573)
## Cloud Exposure
Tenable Cloud Security (CNAPP) Request a demo
Tenable Cloud Vulnerability Management Request a demo
Tenable CIEM Request a demo
Secure your cloud
## Vulnerability Exposure
Tenable Vulnerability Management Try for free
Tenable Security Center Request a demo
Tenable Web App Scanning Try for free
Tenable Patch Management Request a demo
Tenable Enclave Security Request a demo
Tenable Attack Surface Management Request a demo
Tenable Nessus Try for free
## AI Exposure
Tenable AI Exposure Request a demo
## OT/IoT Exposure
Tenable OT Security Request a demo
## Identity Exposure
Tenable Identity Exposure Request a demo
## Business needs
Active Directory
AI Security Posture Management (AI-SPM)
AWS security
Azure security
Cloud Security Posture Man
Bleepingcomputer
CISA warns of Windows flaw used in infostealer malware attacks
blogs_bleepingcomputer·2024-09-16·CVSS 7.5
CVE-2024-38112 [HIGH] CISA warns of Windows flaw used in infostealer malware attacks
## CISA warns of Windows flaw used in infostealer malware attacks
## Sergiu Gatlan
"We released a fix for CVE-2024-38112 in our July 2024 security updates which broke this attack chain," it said. "Customers should both the July 2024 and September 2024 security update to fully protect themselves."
Peter Girnus, the Trend Micro Zero Day Initiative (ZDI) threat researcher who reported the security flaw, told BleepingComputer that Void Banshee hackers exploited it in zero-day attacks to install information-stealing malware.
The vulnerability enables remote attackers to execute arbitrary code on unpatched Windows systems by tricking the targets into visiting a maliciously crafted webpage or opening a malicious file.
"The specific flaw exists within the way Internet Explorer prompts the use
Bleepingcomputer
Windows vulnerability abused braille “spaces” in zero-day attacks
blogs_bleepingcomputer·2024-09-15·CVSS 7.5
CVE-2024-43461 [HIGH] Windows vulnerability abused braille “spaces” in zero-day attacks
## Windows vulnerability abused braille “spaces” in zero-day attacks
## Lawrence Abrams
Void Banshee is an APT hacking group first tracked by Trend Micro that targets organizations in North America, Europe, and Southeast Asia to steal data and for financial gain.
## The CVE-2024-43461 zero-day
In July, Check Point Research and Trend Micro both reported on the same attacks that exploited Windows zero-days to infect devices with the Atlantida info-stealer , used to steal passwords, authentication cookies, and cryptocurrency wallets from infected devices.
The attacks utilized zero-days tracked as CVE-2024-38112 (fixed in July) and CVE-2024-43461 (fixed this month) as part of the attack chain.
The discovery of the CVE-2024-38112 zero-day was attributed to Check Point researcher Haifei Li
Bleepingcomputer
Microsoft September 2024 Patch Tuesday fixes 4 zero-days, 79 flaws
blogs_bleepingcomputer·2024-09-10·CVSS 7.8
[HIGH] Microsoft September 2024 Patch Tuesday fixes 4 zero-days, 79 flaws
## Microsoft September 2024 Patch Tuesday fixes 4 zero-days, 79 flaws
## Lawrence Abrams
30 Elevation of Privilege Vulnerabilities
4 Security Feature Bypass Vulnerabilities
23 Remote Code Execution Vulnerabilities
11 Information Disclosure Vulnerabilities
8 Denial of Service Vulnerabilities
3 Spoofing Vulnerabilities
To learn more about the non-security updates released today, you can review our dedicated articles on the new Windows 11 KB5043076 cumulative update and Windows 10 KB5043064 update .
## Four zero-days disclosed
This month's Patch Tuesday fixes three actively exploited, one of which was publicly disclosed, and another that reintroduces old CVEs so is marked as exploited.
Microsoft classifies a zero-day flaw as one that is publicly disclosed or actively exploited whil
Trendmicro
The September 2024 Security Update Review
blogs_trendmicro·2024-09-10
The September 2024 Security Update Review
# The September 2024 Security Update Review
Get the September 2023 security update and review.
By: Zero Day Initiative
2024/09/10
Read time: ( words)
Save to Folio
We’ve reached September and the pumpkin spice floats in the air. While they aren’t pumpkin-spiced, Microsoft and Adobe have released their latest spicy security patches – including some zesty 0-days. Take a break from your regular activities and join us as we review the details of their latest security alerts. If you’d rather watch the full video recap covering the entire release, you can check it out here:
Adobe Patches for September 2024
For September, Adobe released eight bulletins covering 28 CVEs in Adobe Acrobat and Reader, ColdFusion, Photoshop, Media Encoder, Audition, After Effects, Premier Pro, and Illustrator.
Trendmicro
The September 2024 Security Update Review
blogs_trendmicro·2024-09-10·CVSS 7.8
[HIGH] The September 2024 Security Update Review
## The September 2024 Security Update Review
Get the September 2023 security update and review.
By: Zero Day Initiative 2024/09/10 Read time: ( words)
Save to Folio
We’ve reached September and the pumpkin spice floats in the air. While they aren’t pumpkin-spiced, Microsoft and Adobe have released their latest spicy security patches – including some zesty 0-days. Take a break from your regular activities and join us as we review the details of their latest security alerts. If you’d rather watch the full video recap covering the entire release, you can check it out here:
CVE
Title
Severity
CVSS
Public
Exploited
XI
Type
CVE-2024-38217
Windows Mark of the Web Security Feature Bypass Vulnerability
Important
5.4
Yes
Yes
0
SFB
CVE-2024-43491 †
Microsoft Windows Update Remote
2024-09-10
Published
2024-09-16
Added to CISA KEV
Exploited in the wild