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CVE-2026-50390 is an elevation of privilege vulnerability in the Windows Kernel caused by access of a resource using an incompatible type, resulting in a type confusion condition. An authorized attacker with local access can exploit the flaw to elevate privileges on the affected Windows system. Microsoft assessed exploitation as more likely.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Windows Kernel elevation of privilege vulnerability assessed as exploitation more likely.
An important Windows Kernel elevation of privilege vulnerability rated more likely to be exploited.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.