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CVE-2020-1301

HighPublished

A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 1.0 (SMBv1) server handles certain requests, aka 'Windows...

Published: Jun 9, 2020
Updated: Aug 4, 2024
Assigning CNA: microsoft
Evidence observed: Aug 4, 2026

Primary CVSS

8.8/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

43.8%

Moderate · next 30 days

Percentile: 98.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 1.0 (SMBv1) server handles certain requests, aka 'Windows SMB Remote Code Execution Vulnerability'.

Sources

CVE-2020-1301PoC
POC exploit for SMBLost vulnerability (CVE-2020-1301)

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