CVE-2020-1284

6.5 mediumEPSS 7.0%

Medium (6.5) in microsoft. EPSS 7.0% chance of exploitation in the next 30 days.

A denial of service vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Denial of Service Vulnerability'.

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS: 7.0% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)
Published: 2020-06-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

microsoft:windows_10
microsoft:windows_server_2016

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1284
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1284

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