CVE-2020-0796
Microsoft SMBv3 Remote Code Execution Vulnerability - [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.
Remotely Exploit :
Yes !
Source :
[email protected]
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.
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.
Apply updates per vendor instructions.
https://nvd.nist.gov/vuln/detail/CVE-2020-0796
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.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Apply the appropriate cumulative update.
- Reboot the affected system.
Public PoC/Exploit Available at Github
CVE-2020-0796 has a 373 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-0796 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-0796
weaknesses.
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).
conti tryhackme
None
None
None
Python
None
None
Pascal Batchfile Python JavaScript CSS HTML
None
临时代码存储仓库
Python
Vulnerabilidades Conhecidas em Sistemas Windows Desatualizados
OSCP Cheat Sheet
OSCP Cheat Sheet
None
Windows 11 Penetration test
Vulnerability Scan Report
Multi-year critical infrastructure exposure analysis (2017-2025) - Educational cybersecurity research
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
-
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
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]
Vulnerability Scoring Details
Base CVSS Score: 10
Base CVSS Score: 7.5
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