Exploited vulnerability · CISA KEV

Is CVE-2024-43461 exploited? Yes: in CISA KEV since 16 Sep 2024

Gociux · Microsoft Windows · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2024-43461, Microsoft Windows MSHTML Platform Spoofing Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 16 Sep 2024, 6 days after it was published. It affects Microsoft Windows. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 16 Sep 2024

ransomwareNot knownno confirmed use

EPSStop 1%among the most likely CVEs to be exploited

severity8.8CVSS 3.1 · high

US federal due7 Oct 2024BOD 22-01 deadline

What it is

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.

Vendor	Microsoft (391 exploited CVEs in KEV)
Product	Windows
Vulnerability	Microsoft Windows MSHTML Platform Spoofing Vulnerability
Weakness	CWE-451
Published	10 Sep 2024
Added to KEV	16 Sep 2024
Reported by (CNA)	microsoft

What to do

Check whether you run it. Look for Windows in your asset inventory, including appliances and cloud images. Stack check lists every exploited Microsoft CVE at once.
Apply the fix. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 10 Sep 2024.
Get told next time. Email alerts when CISA adds a CVE for Microsoft.

Other exploited CVEs in Windows

CVE-2026-96951: Microsoft Windows Command Injection Vulnerability (13 Oct 2026)
CVE-2026-81963: Microsoft Windows Link Following Vulnerability (8 Sep 2026)
CVE-2026-85880: Microsoft Windows Heap-Based Buffer Overflow Vulnerability (8 Sep 2026)
CVE-2008-4250: Microsoft Windows Buffer Overflow Vulnerability (20 May 2026)
CVE-2026-32202: Microsoft Windows Protection Mechanism Failure Vulnerability (28 Apr 2026)
CVE-2025-60710: Microsoft Windows Link Following Vulnerability (13 Apr 2026)

References

Questions

Is CVE-2024-43461 being exploited?

Yes. CISA added CVE-2024-43461 to the Known Exploited Vulnerabilities catalog on 16 Sep 2024, which means there is reliable evidence of exploitation in the wild.

Is CVE-2024-43461 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2024-43461?

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check Microsoft's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Windows and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in September 2024 · Microsoft scorecard · act-now radar.

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