CVE-2020-0796

CVE Enrichment

CVSS: 10.0 CRITICAL
EPSS: 99.81%
EPSS Percentile: 99.96%
CISA KEV: YES — Known Exploited Vulnerability

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'.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: secure@microsoft.com
Published: 12-Mar-2020 23:15
Last Modified: 02-Oct-2026 03:17
EPSS Date: 2026-10-11
CWE: CWE-119

CVSS Vector


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

CISA KEV Details

Date Added: 2022-02-10
Remediation Due: 2022-08-10
Known Ransomware Campaign Use: Known
Required Action: Apply updates per vendor instructions.
Notes: https://nvd.nist.gov/vuln/detail/CVE-2020-0796

Affected Products / Versions

microsoft / windows_10_1903
Version / affected range: -
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:*
microsoft / windows_10_1903
Version / affected range: -
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:*
microsoft / windows_10_1903
Version / affected range: -
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:*
microsoft / windows_10_1909
Version / affected range: -
cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:arm64:*
microsoft / windows_10_1909
Version / affected range: -
cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x64:*
microsoft / windows_10_1909
Version / affected range: -
cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x86:*
microsoft / windows_server_1903
Version / affected range: -
cpe:2.3:o:microsoft:windows_server_1903:-:*:*:*:*:*:x64:*
microsoft / windows_server_1909
Version / affected range: -
cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:x64:*

References

Last enrichment sync: 12-Oct-2026 20:57
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (3)

CVE-2020-0796 Recorded Future Identifies 73 High-Impact Vulnerabilities in August, 70 Actively Exploited
CVE-2024-21887 and CVE-2025-0282; Zerologon CVE-2020-1472; EternalBlue MS17-010; SMBGhost CVE-2020-0796. CloudSEK Details MexicanMafia-Linked Intrusion Campaign Targeting Latin American Organizations
the cs4.2 folder were additional payloads targeting historical vulnerabilities like CVE-2014-4113 and CVE-2020-0796, Meterpreter, and web shell payloads-evidence of a comprehensive toolkit geared towards exploitation Open Directory Exposes Cobalt Strike, Phishing and Browser Credential Tools

CVE (83)

Malware (4)

People (4)

Threat Actors (8)

MITRE ATT&CK (68)

Vendors (24)

Products (31)

Tools (45)

Industries (8)

Countries (7)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.