Tuesday, May 13, 2025
HomeComputer SecurityMicrosoft Released Patches for Wormable Windows SMBv3 RCE Flaw - More than...

Microsoft Released Patches for Wormable Windows SMBv3 RCE Flaw – More than 48000 Hosts are Vulnerable

Published on

SIEM as a Service

Follow Us on Google News

Microsoft patched a critical Remote Code Execution Vulnerability with Windows SMBv3 Client/Server that allows an attacker to execute code remotely.

The flaw can be tracked as CVE-2020-0796 and the flaw impacts only Windows 10 Version and Windows Server Version 1903. It was leaked accidentally as part of the March 2020 Patch Tuesday update.

SMBv3 RCE Flaw

The vulnerability resides in the way that certain requests handled by Microsoft Server Message Block 3.1.1. An attacker exploiting the vulnerability can gain the ability to execute code on the target SMB Server or SMB Client.

- Advertisement - Google News

Now the vulnerability patched by Microsoft, server administrators are recommended to apply the patches to protect the networks.

According to the scan run by Kryptos Logic more than 48000 vulnerable hosts were identified. Kryptos Logic also added that they have developed a basic PoC.

“To exploit the vulnerability against an SMB Server, an unauthenticated attacker could send a specially crafted packet to a targeted SMBv3 server. To exploit the vulnerability against an SMB Client, an unauthenticated attacker would need to configure a malicious SMBv3 Server and convince a user to connect to it,” reads Microsoft document.

Microsoft also stated that the vulnerability was not yet exploited in the wild and the details not publically disclosed.

Affected versions

The vulnerability affects Windows 10 Version desktop version and the Windows Server Version 1903.

  • Windows 10 Version 1903 for 32-bit Systems
  • Windows 10 Version 1903 for x64-based Systems
  • Windows 10 Version 1903 for ARM64-based Systems
  • Windows Server, version 1903 (Server Core installation)
  • Windows 10 Version 1909 for 32-bit Systems
  • Windows 10 Version 1909 for x64-based Systems
  • Windows 10 Version 1909 for ARM64-based Systems
  • Windows Server, version 1909 (Server Core installation)
Gurubaran
Gurubaran
Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Latest articles

Lumma Stealer Upgraded with PowerShell Tools and Advanced Evasion Techniques

Sophos Managed Detection and Response (MDR) in September 2024, the notorious Lumma Stealer malware...

New Noodlophile Malware Spreads Through Fake AI Video Generation Platforms

Cybercriminals have unleashed a new malware campaign using fake AI video generation platforms as...

Kimsuky Hacker Group Deploys New Phishing Techniques and Malware Campaigns

The North Korean state-sponsored Advanced Persistent Threat (APT) group Kimsuky, also known as “Black...

APT37 Hackers Use Weaponized LNK Files and Dropbox for Command-and-Control Operations

The North Korean state-sponsored hacking group APT37, also known as ScarCruft, launched a spear...

Resilience at Scale

Why Application Security is Non-Negotiable

The resilience of your digital infrastructure directly impacts your ability to scale. And yet, application security remains a critical weak link for most organizations.

Application Security is no longer just a defensive play—it’s the cornerstone of cyber resilience and sustainable growth. In this webinar, Karthik Krishnamoorthy (CTO of Indusface) and Phani Deepak Akella (VP of Marketing – Indusface), will share how AI-powered application security can help organizations build resilience by

Discussion points


Protecting at internet scale using AI and behavioral-based DDoS & bot mitigation.
Autonomously discovering external assets and remediating vulnerabilities within 72 hours, enabling secure, confident scaling.
Ensuring 100% application availability through platforms architected for failure resilience.
Eliminating silos with real-time correlation between attack surface and active threats for rapid, accurate mitigation

More like this

Is this Website Safe: How to Check Website Safety – 2025

is this website safe? In this digital world, Check a website is safe is...

Firefox 133.0 Released with Multiple Security Updates – What’s New!

Mozilla has officially launched Firefox 133.0, offering enhanced features, significant performance improvements, and critical...

Digital Wallets Bypassed To Allow Purchase With Stolen Cards

Digital wallets enable users to securely store their financial information on smart devices and...