CVE-2020-1206

Name: CVE-2020-1206
Creator: NVD / NIST
Published: 2020-06-09T20:15:13.88+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 9.54%

Last modified Jun 17, 2026

CVE-2020-1206 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An information disclosure vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Information Disclosure Vulnerability'.. EPSS estimates a 9.54% chance of exploitation in the next 30 days.

Description

An information disclosure vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Information Disclosure Vulnerability'.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

9.54%

94.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-908

Affected Software

Vendor	Product	Versions
Microsoft	Windows 10	1903
Microsoft	Windows 10	1909
Microsoft	Windows 10	2004
Microsoft	Windows Server 2016	1903
Microsoft	Windows Server 2016	1909
Microsoft	Windows Server 2016	2004

References

http://packetstormsecurity.com/files/158053/SMBleed-Uninitialized-Kernel-Memory-Read-Proof-Of-Concept.htmlTechnical Description
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1206Patch, Vendor Advisory
http://packetstormsecurity.com/files/158053/SMBleed-Uninitialized-Kernel-Memory-Read-Proof-Of-Concept.htmlTechnical Description
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1206Patch, Vendor Advisory

Timeline

Published: Jun 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-1206?

How severe is CVE-2020-1206?

CVE-2020-1206 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 9.54% probability of exploitation in the next 30 days.

How do I fix CVE-2020-1206?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-1206?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST