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CVE-2026-20840highCWE-122

Windows NTFS Remote Code Execution Vulnerability

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 4.7%
exploitation probability
4.7%top 9% of all CVEs
observed exploitation
nono source reports it
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C