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CVE-2026-42982 is an elevation-of-privilege vulnerability in Windows Secure Kernel Mode caused by improper validation of consistency within input. The flaw allows a locally present, authorized attacker to trigger incorrect handling of inconsistent input in the secure kernel context, resulting in privilege escalation. Microsoft classifies the issue as affecting the Windows Secure Kernel Mode component and indicates that successful exploitation can lead to execution with SYSTEM-level privileges.
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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.
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.
An elevation of privilege vulnerability in Windows Secure Kernel Mode.
A critical elevation of privilege vulnerability in Windows Secure Kernel Mode.
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.