Threats / Microsoft / CVE-2024-43573
CVE-2024-43573
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft Windows vulnerability
Microsoft Windows MSHTML Platform contains a spoofing vulnerability that can lead to loss of confidentiality. The vulnerability is classified as CWE-79 and has been exploited in the wild.
Verdict
Today item — known-exploited.
A spoofing vulnerability in Windows MSHTML Platform enables attackers to deceive users about content origin or authenticity, potentially leading to credential theft or malware distribution through social engineering.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
4 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-10-08).
Probability (EPSS)
EPSS 0.44382 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Microsoft, Windows. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-79 Cross-site Scripting (XSS) — weakness family: Web / client.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious webpage that mimics a trusted site using MSHTML spoofing techniques to bypass security indicators.
Business
Users cannot reliably distinguish legitimate from fraudulent content, increasing susceptibility to credential harvesting and account compromise.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I exploit the spoofing flaw to display false security warnings or trusted brand elements that trick users into downloading malware.
Business
Endpoint security is undermined as users bypass their own defenses based on spoofed trust signals, leading to widespread malware infections.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05