CVE-2026-40369High· 7.8▾ MidnightPoC availableHeap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 42.9 · likelihood 0.9 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Exploit-prediction probability, daily snapshots since Jul 30.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
4.7%
7 GitHub repos
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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