CVE-2020-1206

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'.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 47.72% Top 5%
Vendor Advisory microsoft.com
Affected: Microsoft Windows 10 Version 1909 for 32-bit Systems
Affected: Microsoft Windows 10 Version 1909 for x64-based Systems
Affected: Microsoft Windows 10 Version 1909 for ARM64-based Systems
Affected: Microsoft Windows Server, version 1909 (Server Core installation)
Affected: Microsoft Windows 10 Version 1903 for 32-bit Systems
Affected: Microsoft Windows 10 Version 1903 for x64-based Systems
Affected: Microsoft Windows 10 Version 1903 for ARM64-based Systems
Affected: Microsoft Windows Server, version 1903 (Server Core installation)
Affected: Microsoft Windows 10 Version 2004 for ARM64-based Systems
Affected: Microsoft Windows 10 Version 2004 for x64-based Systems
Affected: Microsoft Windows 10 Version 2004 for 32-bit Systems
Affected: Microsoft Windows Server, version 2004 (Server Core installation)
Published at:
Updated at:

References

Link Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1206 patch vendor advisory
http://packetstormsecurity.com/files/158053/SMBleed-Uninitialized-Kernel-Memory-Read-Proof-Of-Concept.html technical description

Frequently Asked Questions

What is the severity of CVE-2020-1206?
CVE-2020-1206 has been scored as a high severity vulnerability.
How to fix CVE-2020-1206?
To fix CVE-2020-1206, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-1206 being actively exploited in the wild?
It is possible that CVE-2020-1206 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~48% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-1206?
CVE-2020-1206 affects Microsoft Windows 10 Version 1909 for 32-bit Systems, Microsoft Windows 10 Version 1909 for x64-based Systems, Microsoft Windows 10 Version 1909 for ARM64-based Systems, Microsoft Windows Server, version 1909 (Server Core installation), Microsoft Windows 10 Version 1903 for 32-bit Systems, Microsoft Windows 10 Version 1903 for x64-based Systems, Microsoft Windows 10 Version 1903 for ARM64-based Systems, Microsoft Windows Server, version 1903 (Server Core installation), Microsoft Windows 10 Version 2004 for ARM64-based Systems, Microsoft Windows 10 Version 2004 for x64-based Systems, Microsoft Windows 10 Version 2004 for 32-bit Systems, Microsoft Windows Server, version 2004 (Server Core installation).
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