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CVE-2020-0796

99
FAUCET Score

CVE-2020-0796 is a critical remote code execution vulnerability in the Microsoft Server Message Block 3.1.1 (SMBv3) protocol, affecting Windows 10 versions 1903 and 1909, and Windows Server versions 1903 and 1909. With a CVSS score of 10.0, it allows unauthenticated attackers to execute arbitrary code remotely with high impact on confidentiality, integrity, and availability. This vulnerability, known as 'SMBGhost', is actively exploited, including in ransomware campaigns, and has readily available exploit code in Metasploit and ExploitDB. Its high EPSS score and extensive community discussion underscore the urgent need for patching.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:arm64:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x64:*

CVSS Data

CVSS version used by this source: 3.1

10.0CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
99.81%
Probability of exploitation in next 30 days
EPSS Percentile
100.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Added to KEV · Feb 10, 2022
Metasploit: SMBv3 Compression Buffer Overflow · Mar 13, 2020
Nuclei: CVE-2020-0796 · Jun 23, 2025
ExploitDB: EDB-48537 · Jun 2, 2020
This CVE's current EPSS score of 0.9981 is in the 100th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1903 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1903 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1903 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows Server, version 1903 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1909 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1909 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1909 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows Server, version 1909 (Server Core installation)
View patch

Vendor Advisories (1)

microsoft2020-Mar/CVE-2020-0796Critical

Windows SMBv3 Client/Server Remote Code Execution Vulnerability

Mar 10, 2020

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
packetstormsecurity.com / files/156731/CoronaBlue-SMBGhost-Microsoft-Windows-10-SMB-3.1.1-Proof-Of-Concept.html
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/156732/Microsoft-Windows-SMB-3.1.1-Remote-Code-Execution.html
ExploitThird Party AdvisoryVDB Entry
packetstormsecurity.com / files/156980/Microsoft-Windows-10-SMB-3.1.1-Local-Privilege-Escalation.html
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/157110/SMBv3-Compression-Buffer-Overflow.html
ExploitThird Party AdvisoryVDB Entry
packetstormsecurity.com / files/157901/Microsoft-Windows-SMBGhost-Remote-Code-Execution.html
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/158054/SMBleed-SMBGhost-Pre-Authentication-Remote-Code-Execution-Proof-Of-Concept.html
Third Party AdvisoryVDB Entry
portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2020-0796
PatchVendor Advisory