CVE-2026-50421
HIGHDescription
Access of resource using incompatible type ('type confusion') in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges locally.
Is your site exposed to CVE-2026-50421?
Run a free security scan — no signup, results in seconds.
CVSS v3.1 Score
EPSS — Exploit Prediction
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
Weakness Type (CWE)
Affected Products
| Vendor | Product |
|---|---|
| microsoft | windows_10_1607 |
| microsoft | windows_10_1607 |
| microsoft | windows_10_1809 |
| microsoft | windows_10_1809 |
| microsoft | windows_10_21h2 |
| microsoft | windows_10_21h2 |
| microsoft | windows_10_21h2 |
| microsoft | windows_10_22h2 |
| microsoft | windows_10_22h2 |
| microsoft | windows_10_22h2 |
| microsoft | windows_11_24h2 |
| microsoft | windows_11_24h2 |
| microsoft | windows_11_25h2 |
| microsoft | windows_11_25h2 |
| microsoft | windows_11_26h1 |
| microsoft | windows_11_26h1 |
| microsoft | windows_server_2016 |
| microsoft | windows_server_2019 |
| microsoft | windows_server_2022 |
| microsoft | windows_server_2025 |
References
Advisories & Patches
Frequently Asked Questions
What is CVE-2026-50421? +
How severe is CVE-2026-50421? +
What products are affected by CVE-2026-50421? +
How do I check if I'm vulnerable to CVE-2026-50421? +
Related Vulnerabilities
LibreOffice Calc can import tracked changes from a spreadsheet document. A heap buffer overflow existed when a document reused the …
A type confusion vulnerability in Qt SVG allows an attacker to cause an application crash via a crafted SVG image. …
LibreOffice can import documents in the OOXML format (DOCX). A heap buffer overflow existed when replaying deferred parser events for …
Type Confusion in WebAudio in Google Chrome prior to 150.0.7871.182 allowed a remote attacker to execute arbitrary code inside a …
Type confusion in Snapchat LensCore could lead to denial of service or arbitrary code execution prior to version 12.88. We …
In venc, there is a possible out of bounds write due to type confusion. This could lead to local escalation …