Mar 2020:
CVE-2020-0796 Published on March 12, 2020

A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Remote Code Execution Vulnerability'.

NVD

Known Exploited Vulnerability

This Microsoft SMBv3 Remote Code Execution Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests. An attacker who successfully exploited the vulnerability could gain the ability to execute code on the target server or client.

The following remediation steps are recommended / required by August 10, 2022: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2020-0796 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
CHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is a Buffer Overflow Vulnerability?

The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.

CVE-2020-0796 has been classified to as a Buffer Overflow vulnerability or weakness.


Products Associated with CVE-2020-0796

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Microsoft Windows 10
 
Microsoft Windows Server 2016
 
Microsoft Windows 10 1909
 
Microsoft Windows 10 1903
 
Microsoft Windows Server 1909
 
Microsoft Windows Server 1903
 
Microsoft Windows Server
 

Affected Versions

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 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):

Exploit Probability

EPSS
94.42%
Percentile
99.98%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.