CVE-2026-83586High· 7.8▾ TwilightWeak authentication in Windows Resilient File System (ReFS) Deduplication Service allows an authorized attacker to elevate privileges locally.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0.1 · exploitation 0
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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 Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
0.3% → 0.3%
Weak authentication in Windows Resilient File System (ReFS) Deduplication Service allows an authorized attacker to elevate privileges locally.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-88141High· 7.0Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-88101High· 7.8Weak authentication in Microsoft Input Method Editor (IME) allows an authorized attacker to elevate privileges locally.
CVE-2026-87691High· 7.8Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally.
CVE-2026-85939Medium· 5.3Weak authentication in Windows Kernel allows an authorized attacker to bypass a security feature over a network.