CVE-2020-0796criticalunder attackransomwareCWE-119

CVE-2020-0796: critical vulnerability in Microsoft Windows 10 Version 1903 for 32-bit…

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100Vexday Risk Score

Patch now. It under exploitation confirmed by CISA and has a working public exploit.

ssvc Actcvss 10epss 100%
from disclosure to weaponsame day
Published on NVDMar 12
1st PoCNov 19
metasploit+1d
CISA KEV+700d
Action required by CISAfederal deadline: 2022-08-10

Apply updates per vendor instructions.

In short

A critical vulnerability in Windows SMBv3 (the protocol used for file sharing) allows attackers to execute malicious code remotely on vulnerable computers without needing special permissions. This is particularly dangerous because SMBv3 is widely used in networks and the attack requires minimal interaction.

Technical detail

Remote code execution vulnerability in SMBv3 protocol (CWE-119: buffer overflow) triggered via crafted network requests. Attack vector is network-based with no authentication required; affected systems automatically process malicious SMBv3 packets that corrupt memory and lead to arbitrary code execution with system privileges.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

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'.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
Microsoft · Windows 10 Version 1903 for 32-bit SystemsMicrosoft · Windows 10 Version 1903 for ARM64-based SystemsMicrosoft · Windows 10 Version 1903 for x64-based SystemsMicrosoft · Windows 10 Version 1909 for 32-bit SystemsMicrosoft · Windows 10 Version 1909 for ARM64-based SystemsMicrosoft · Windows 10 Version 1909 for x64-based SystemsMicrosoft · Windows Server, version 1903 (Server Core installation)Microsoft · Windows Server, version 1909 (Server Core installation)
public PoCs found — 163
exploitdbwww.exploit-db.com/exploits/48537unverifiedexploitdbwww.exploit-db.com/exploits/48267unverifiedexploitdbwww.exploit-db.com/exploits/48216unverifiedgithubgithub.com/danigargu/CVE-2020-0796★ 1359githubgithub.com/ly4k/SMBGhost★ 723githubgithub.com/jamf/CVE-2020-0796-RCE-POC★ 569githubgithub.com/Barriuso/SMBGhost_AutomateExploitation★ 361githubgithub.com/eerykitty/CVE-2020-0796-PoC★ 332githubgithub.com/jamf/CVE-2020-0796-LPE-POC★ 244githubgithub.com/Rvn0xsy/CVE_2020_0796_CNA★ 74githubgithub.com/rsmudge/CVE-2020-0796-BOF★ 70githubgithub.com/jiansiting/CVE-2020-0796★ 65githubgithub.com/ioncodes/SMBGhost★ 57githubgithub.com/k8gege/PyLadon★ 53githubgithub.com/jamf/SMBGhost-SMBleed-scanner★ 44githubgithub.com/eastmountyxz/CVE-2020-0796-SMB★ 33githubgithub.com/T13nn3s/CVE-2020-0796★ 28githubgithub.com/maxpl0it/Unauthenticated-CVE-2020-0796-PoC★ 22githubgithub.com/Almorabea/SMBGhost-LPE-Metasploit-Module★ 20githubgithub.com/gabimarti/SMBScanner★ 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2githubgithub.com/MasterSploit/LPE---CVE-2020-0796★ 2githubgithub.com/Jagadeesh7532/-CVE-2020-0796-SMBGhost-Windows-10-SMBv3-Remote-Code-Execution-Vulnerability★ 2githubgithub.com/TinToSer/CVE-2020-0796-LPE★ 2githubgithub.com/Anonimo501/SMBGhost_CVE-2020-0796_checker★ 2githubgithub.com/LabDookhtegan/CVE-2020-0796-EXP★ 1githubgithub.com/BinaryShadow94/SMBv3.1.1-scan---CVE-2020-0796★ 1githubgithub.com/awareseven/eternalghosttest★ 1githubgithub.com/cory-zajicek/CVE-2020-0796-DoS★ 1githubgithub.com/julixsalas/CVE-2020-0796★ 1githubgithub.com/OldDream666/cve-2020-0796★ 1githubgithub.com/ran-sama/CVE-2020-0796★ 1githubgithub.com/bsec404/CVE-2020-0796★ 1githubgithub.com/AdamSonov/smbGhostCVE-2020-0796★ 1githubgithub.com/SEHandler/CVE-2020-0796★ 1githubgithub.com/F6JO/CVE-2020-0796-Batch-scanning★ 1githubgithub.com/netscylla/SMBGhost★ 1githubgithub.com/Dhoomralochana/Scanners-for-CVE-2020-0796-Testing★ 1githubgithub.com/cybermads/CVE-2020-0796★ 1githubgithub.com/arzuozkan/CVE-2020-0796★ 1githubgithub.com/1stPeak/CVE-2020-0796-Scanner★ 1githubgithub.com/datntsec/CVE-2020-0796★ 1githubgithub.com/1060275195/SMBGhost★ 0githubgithub.com/ysyyrps123/CVE-2020-0796★ 0githubgithub.com/TweatherQ/CVE-2020-0796★ 0githubgithub.com/section-c/CVE-2020-0796★ 0githubgithub.com/hungdnvp/POC-CVE-2020-0796★ 0githubgithub.com/monjheta/CVE-2020-0796★ 0githubgithub.com/esmwaSpyware/DoS-PoC-for-CVE-2020-0796-SMBGhost-★ 0githubgithub.com/nyambiblaise/Microsoft-Windows-SMBGhost-Vulnerability-Checker---CVE-2020-0796---SMBv3-RCE★ 0githubgithub.com/thai1012/cve-2020-0796★ 0githubgithub.com/p4ncontomat3/smbghost★ 0githubgithub.com/tripledd/cve-2020-0796-vuln★ 0githubgithub.com/kn6869610/CVE-2020-0796★ 0githubgithub.com/Almorabea/SMBGhost-WorkaroundApplier★ 0githubgithub.com/wsfengfan/CVE-2020-0796★ 0githubgithub.com/bacth0san96/SMBGhostScanner★ 0githubgithub.com/halsten/CVE-2020-0796★ 0githubgithub.com/ysyyrps123/CVE-2020-0796-exp★ 0githubgithub.com/Opensitoo/cve-2020-0796★ 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