CVE-2026-42980High· 7.8▾ MidnightPoC availableInteger underflow (wrap or wraparound) in Windows NT OS Kernel allows an authorized attacker to elevate privileges locally.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 42.9 · likelihood 1.4 · 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.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Jul 31.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
6.9%
2 GitHub repos
Integer underflow (wrap or wraparound) in Windows NT OS Kernel allows an authorized attacker to elevate privileges locally.
windows_10_1607 < 10.0.14393.9234windows_10_1809 < 10.0.17763.8880windows_10_21h2 < 10.0.19044.7417windows_10_22h2 < 10.0.19045.7417windows_11_23h2 < 10.0.22631.7219windows_11_24h2 < 10.0.26100.8655windows_11_25h2 < 10.0.26200.8655windows_11_26h1 < 10.0.28000.2269windows_server_2012windows_server_2012 = r2windows_server_2016 < 10.0.14393.9234windows_server_2019 < 10.0.17763.8880windows_server_2022 < 10.0.20348.5256windows_server_2025 < 10.0.26100.32995Upgrade past the affected range:
windows_10_1607 10.0.14393.9234windows_10_1809 10.0.17763.8880windows_10_21h2 10.0.19044.7417windows_10_22h2 10.0.19045.7417windows_11_23h2 10.0.22631.7219windows_11_24h2 10.0.26100.8655windows_11_25h2 10.0.26200.8655windows_11_26h1 10.0.28000.2269windows_server_2016 10.0.14393.9234windows_server_2019 10.0.17763.8880windows_server_2022 10.0.20348.5256windows_server_2025 10.0.26100.32995Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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