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HighCISA KEVExploited in the wildPublic exploit

Windows MSHTML Platform Spoofing Vulnerability

IdentifiersCVE-2024-43461CWE-290

CVE-2024-43461 is a Microsoft Windows MSHTML platform spoofing vulnerability. The provided content identifies it as an Important-severity issue with CVSS 8.8 and states that Microsoft later updated its advisory to report in-the-wild exploitation by the threat actor Void Banshee. The flaw was used as part of an attack chain associated with CVE-2024-38112 prior to July 2024, and that chain was used to deliver Atlantida stealer malware. Based on the available information, the vulnerability enables spoofing through the MSHTML platform, but the specific vulnerable function, code path, and low-level root cause are not provided in the source material.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an attacker to spoof content or trust context in a way that can facilitate user deception and downstream malware delivery. According to the provided content, Void Banshee exploited this vulnerability in the wild as part of an attack chain to deliver Atlantida information-stealing malware. Atlantida is described as stealing passwords, authentication cookies, and cryptocurrency wallets. The practical impact therefore includes increased success of social engineering or malicious content delivery, leading to credential theft, session theft, theft of cryptocurrency wallet data, and compromise of affected user environments.

Mitigation

If you can’t patch tonight, do this now.

Until patching is fully deployed, reduce exposure to MSHTML-based attack chains by limiting or monitoring delivery of untrusted HTML/HTA/web content, hardening email and web filtering, and blocking or sandboxing suspicious files and links from untrusted sources. Because the vulnerability was used in a malware-delivery chain, defenders should also monitor for indicators associated with Void Banshee and Atlantida stealer, enforce least privilege, use application control where feasible, and increase detection for suspicious browser/MSHTML-driven content execution and follow-on credential or cookie theft activity. Specific vendor-prescribed mitigations beyond patching are not provided in the source material.

Remediation

Patch, then assume compromise.

Apply Microsoft's September 2024 security updates that address CVE-2024-43461. The content also states that Microsoft had already released a fix for the related CVE-2024-38112 in July 2024, which broke the observed attack chain. Organizations should ensure both the September 2024 fixes for CVE-2024-43461 and the July 2024 updates for CVE-2024-38112 are deployed where applicable, and verify that systems are fully updated using the latest cumulative/security updates from Microsoft.
PUBLIC EXPLOITS

Exploits

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VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
Microsoft CorporationWindows 10 1507operating_system
Microsoft CorporationWindows 10 1607operating_system
Microsoft CorporationWindows 10 1809operating_system
Microsoft CorporationWindows 10 21h2operating_system
Microsoft CorporationWindows 10 22h2operating_system
Microsoft CorporationWindows 11 21h2operating_system
Microsoft CorporationWindows 11 22h2operating_system
Microsoft CorporationWindows 11 23h2operating_system
Microsoft CorporationWindows 11 24h2operating_system
Microsoft CorporationWindows Server 2008operating_system
Microsoft CorporationWindows Server 2008 R2operating_system
Microsoft CorporationWindows Server 2008 Sp2operating_system
Microsoft CorporationWindows Server 2012operating_system
Microsoft CorporationWindows Server 2012 R2operating_system
Microsoft CorporationWindows Server 2016operating_system
Microsoft CorporationWindows Server 2019operating_system
Microsoft CorporationWindows Server 2022operating_system
Microsoft CorporationWindows Server 2022 23h2operating_system
Microsoft CorporationWindows Server 23h2operating_system

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What this page doesn’t show

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Exposure mapping

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Threat actor evidence1

Every observed campaign linking this CVE to a named adversary.

Associated malware1

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Detection signatures1

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity

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