Known Exploited Vulnerability
10.0
CRITICAL
CVE-2020-0796
Microsoft SMBv3 Remote Code Execution Vulnerabilit - [Actively Exploited]
Description

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'.

INFO

Published Date :

March 12, 2020, 4:15 p.m.

Last Modified :

April 4, 2025, 8:28 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

6.0

Exploitability Score :

3.9
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

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.

Required Action :

Apply updates per vendor instructions.

Notes :

https://nvd.nist.gov/vuln/detail/CVE-2020-0796

Public PoC/Exploit Available at Github

CVE-2020-0796 has a 369 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2020-0796 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft windows_10
2 Microsoft windows_server_2016
3 Microsoft windows_10_1909
4 Microsoft windows_server_1903
5 Microsoft windows_server_1909
6 Microsoft windows_10_1903
: Total Affected Vendor : 1 | Products : 6
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-0796.

URL Resource
http://packetstormsecurity.com/files/156731/CoronaBlue-SMBGhost-Microsoft-Windows-10-SMB-3.1.1-Proof-Of-Concept.html Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/156732/Microsoft-Windows-SMB-3.1.1-Remote-Code-Execution.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/156980/Microsoft-Windows-10-SMB-3.1.1-Local-Privilege-Escalation.html Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/157110/SMBv3-Compression-Buffer-Overflow.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/157901/Microsoft-Windows-SMBGhost-Remote-Code-Execution.html Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/158054/SMBleed-SMBGhost-Pre-Authentication-Remote-Code-Execution-Proof-Of-Concept.html Third Party Advisory VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0796 Patch Vendor Advisory
http://packetstormsecurity.com/files/156731/CoronaBlue-SMBGhost-Microsoft-Windows-10-SMB-3.1.1-Proof-Of-Concept.html Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/156732/Microsoft-Windows-SMB-3.1.1-Remote-Code-Execution.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/156980/Microsoft-Windows-10-SMB-3.1.1-Local-Privilege-Escalation.html Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/157110/SMBv3-Compression-Buffer-Overflow.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/157901/Microsoft-Windows-SMBGhost-Remote-Code-Execution.html Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/158054/SMBleed-SMBGhost-Pre-Authentication-Remote-Code-Execution-Proof-Of-Concept.html Third Party Advisory VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0796 Patch Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
nullaresponsio/Eternal-Pulse-5.2

None

Python

Updated: 6 days, 13 hours ago
0 stars 0 fork 0 watcher
Born at : July 26, 2025, 6:45 p.m. This repo has been linked 3 different CVEs too.
Profile Photo
Jalexander798/JA_Tools-ActiveDirectory-Exploitation

None

Updated: 1 week, 2 days ago
0 stars 0 fork 0 watcher
Born at : July 24, 2025, 10:24 p.m. This repo has been linked 10 different CVEs too.
Profile Photo
Jalexander798/JA_Tools-0xsp-Mongoose

None

Pascal Batchfile Python JavaScript CSS HTML

Updated: 1 week, 5 days ago
0 stars 0 fork 0 watcher
Born at : July 21, 2025, 1:55 p.m. This repo has been linked 14 different CVEs too.
Profile Photo
kiranjpjk/Penetration-Testing-VMs-and-Web

None

Updated: 1 week, 6 days ago
0 stars 0 fork 0 watcher
Born at : July 20, 2025, 6:13 p.m. This repo has been linked 7 different CVEs too.
Profile Photo
coksl/oss-cloudes

临时代码存储仓库

Python

Updated: 2 weeks, 2 days ago
0 stars 0 fork 0 watcher
Born at : July 17, 2025, 9:16 a.m. This repo has been linked 7 different CVEs too.
Profile Photo
willamygarcia/Vuln_Windows_7_11

Vulnerabilidades Conhecidas em Sistemas Windows Desatualizados

Updated: 2 weeks, 6 days ago
0 stars 0 fork 0 watcher
Born at : July 13, 2025, 3:24 p.m. This repo has been linked 17 different CVEs too.
Profile Photo
jitmondal1/OSCP

OSCP Cheat Sheet

Updated: 2 weeks, 2 days ago
1 stars 0 fork 0 watcher
Born at : July 5, 2025, 10:38 p.m. This repo has been linked 73 different CVEs too.
Profile Photo
jitmondal1/OSCP

OSCP Cheat Sheet

Updated: 4 weeks ago
0 stars 0 fork 0 watcher
Born at : July 5, 2025, 4:34 p.m. This repo has been linked 73 different CVEs too.
Profile Photo
VishuGahlyan/OSCP

None

Updated: 1 month ago
0 stars 0 fork 0 watcher
Born at : July 2, 2025, 7:05 a.m. This repo has been linked 72 different CVEs too.
Profile Photo
GizzZmo/Windows-11-pentest

Windows 11 Penetration test

Updated: 1 month, 1 week ago
0 stars 0 fork 0 watcher
Born at : June 26, 2025, 7:16 p.m. This repo has been linked 2 different CVEs too.
Profile Photo
Suman234578/Task-3-Vulnerability-Scan-Report

Vulnerability Scan Report

Updated: 1 month, 1 week ago
0 stars 0 fork 0 watcher
Born at : June 26, 2025, 2:58 p.m. This repo has been linked 3 different CVEs too.
Profile Photo
qbit6634/Threat-Intel-Brief

Multi-year critical infrastructure exposure analysis (2017-2025) - Educational cybersecurity research

Updated: 3 weeks, 3 days ago
1 stars 0 fork 0 watcher
Born at : June 20, 2025, 10:46 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
mssky9527/Rscan

None

Rust

Updated: 1 month, 2 weeks ago
0 stars 1 fork 1 watcher
Born at : June 19, 2025, 1 p.m. This repo has been linked 14 different CVEs too.
Profile Photo
VpSanta3/Rscan

None

Rust

Updated: 1 month, 2 weeks ago
7 stars 0 fork 0 watcher
Born at : June 19, 2025, 2:44 a.m. This repo has been linked 14 different CVEs too.
Profile Photo
AMatheusFeitosaM/OSCP-Cheat

OSCP Cheat

Updated: 1 month, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : June 16, 2025, 2:22 p.m. This repo has been linked 72 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-0796 vulnerability anywhere in the article.

  • The Hacker News
Hackers Target Over 70 Microsoft Exchange Servers to Steal Credentials via Keyloggers

Unidentified threat actors have been observed targeting publicly exposed Microsoft Exchange servers to inject malicious code into the login pages that harvest their credentials. Positive Technologies, ... Read more

Published Date: Jun 24, 2025 (1 month, 1 week ago)
CVE-2025-2783 CVE-2023-33538 CVE-2021-34523 CVE-2021-34473 CVE-2021-31206 CVE-2021-31207 CVE-2021-27065 CVE-2021-26858 CVE-2021-26857 CVE-2021-26855 ...+2 more CVE
  • Help Net Security
Researchers unearth keyloggers on Outlook login pages

Unknown threat actors have compromised internet-accessible Microsoft Exchange Servers of government organizations and companies around the world, and have injected the organizations’ Outlook on the We ... Read more

Published Date: Jun 17, 2025 (1 month, 2 weeks ago)
CVE-2021-34523 CVE-2021-34473 CVE-2021-31207 CVE-2021-26855 CVE-2020-0796

The following table lists the changes that have been made to the CVE-2020-0796 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Modified Analysis by [email protected]

    Apr. 04, 2025

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* OR *cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_1903:-:*:*:*:*:*:x64:*
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Feb. 04, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    Added CWE CWE-119
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/156731/CoronaBlue-SMBGhost-Microsoft-Windows-10-SMB-3.1.1-Proof-Of-Concept.html
    Added Reference http://packetstormsecurity.com/files/156732/Microsoft-Windows-SMB-3.1.1-Remote-Code-Execution.html
    Added Reference http://packetstormsecurity.com/files/156980/Microsoft-Windows-10-SMB-3.1.1-Local-Privilege-Escalation.html
    Added Reference http://packetstormsecurity.com/files/157110/SMBv3-Compression-Buffer-Overflow.html
    Added Reference http://packetstormsecurity.com/files/157901/Microsoft-Windows-SMBGhost-Remote-Code-Execution.html
    Added Reference http://packetstormsecurity.com/files/158054/SMBleed-SMBGhost-Pre-Authentication-Remote-Code-Execution-Proof-Of-Concept.html
    Added Reference https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0796
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Apr. 22, 2022

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/156731/CoronaBlue-SMBGhost-Microsoft-Windows-10-SMB-3.1.1-Proof-Of-Concept.html Third Party Advisory http://packetstormsecurity.com/files/156731/CoronaBlue-SMBGhost-Microsoft-Windows-10-SMB-3.1.1-Proof-Of-Concept.html Third Party Advisory, VDB Entry
    Changed Reference Type http://packetstormsecurity.com/files/156732/Microsoft-Windows-SMB-3.1.1-Remote-Code-Execution.html Third Party Advisory http://packetstormsecurity.com/files/156732/Microsoft-Windows-SMB-3.1.1-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type http://packetstormsecurity.com/files/156980/Microsoft-Windows-10-SMB-3.1.1-Local-Privilege-Escalation.html No Types Assigned http://packetstormsecurity.com/files/156980/Microsoft-Windows-10-SMB-3.1.1-Local-Privilege-Escalation.html Third Party Advisory, VDB Entry
    Changed Reference Type http://packetstormsecurity.com/files/157110/SMBv3-Compression-Buffer-Overflow.html No Types Assigned http://packetstormsecurity.com/files/157110/SMBv3-Compression-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type http://packetstormsecurity.com/files/157901/Microsoft-Windows-SMBGhost-Remote-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/157901/Microsoft-Windows-SMBGhost-Remote-Code-Execution.html Third Party Advisory, VDB Entry
    Changed Reference Type http://packetstormsecurity.com/files/158054/SMBleed-SMBGhost-Pre-Authentication-Remote-Code-Execution-Proof-Of-Concept.html No Types Assigned http://packetstormsecurity.com/files/158054/SMBleed-SMBGhost-Pre-Authentication-Remote-Code-Execution-Proof-Of-Concept.html Third Party Advisory, VDB Entry
  • CWE Remap by [email protected]

    Jul. 21, 2021

    Action Type Old Value New Value
    Changed CWE CWE-20 CWE-119
  • CVE Modified by [email protected]

    Jun. 11, 2020

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/158054/SMBleed-SMBGhost-Pre-Authentication-Remote-Code-Execution-Proof-Of-Concept.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 02, 2020

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/157901/Microsoft-Windows-SMBGhost-Remote-Code-Execution.html [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 06, 2020

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/157110/SMBv3-Compression-Buffer-Overflow.html [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 31, 2020

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/156980/Microsoft-Windows-10-SMB-3.1.1-Local-Privilege-Escalation.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 16, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    Changed Reference Type http://packetstormsecurity.com/files/156731/CoronaBlue-SMBGhost-Microsoft-Windows-10-SMB-3.1.1-Proof-Of-Concept.html No Types Assigned http://packetstormsecurity.com/files/156731/CoronaBlue-SMBGhost-Microsoft-Windows-10-SMB-3.1.1-Proof-Of-Concept.html Third Party Advisory
    Changed Reference Type http://packetstormsecurity.com/files/156732/Microsoft-Windows-SMB-3.1.1-Remote-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/156732/Microsoft-Windows-SMB-3.1.1-Remote-Code-Execution.html Third Party Advisory
    Changed Reference Type https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0796 No Types Assigned https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0796 Patch, Vendor Advisory
    Added CWE NIST CWE-20
    Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 15, 2020

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/156731/CoronaBlue-SMBGhost-Microsoft-Windows-10-SMB-3.1.1-Proof-Of-Concept.html [No Types Assigned]
    Added Reference http://packetstormsecurity.com/files/156732/Microsoft-Windows-SMB-3.1.1-Remote-Code-Execution.html [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

94.42 }} -0.01%

score

0.99977

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: