CVE-2020-0796
A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain…
- Published
- Updated
- Reserved
- Assigned by
- microsoft
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'.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Microsoft SMBv3 Remote Code Execution Vulnerability.
- Added
- 10 Feb 2022
- Fix due (US federal)
- 10 Aug 2022
- Used by ransomware
- Known
Apply updates per vendor instructions.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Critical10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | Critical10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 99.8% · top 0.1% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 10.0.
Weakness
Affected products
Microsoft · Windows 10 Version 1903 for 32-bit Systems
- affected unspecified
Microsoft · Windows 10 Version 1903 for x64-based Systems
- affected unspecified
Microsoft · Windows 10 Version 1903 for ARM64-based Systems
- affected unspecified
Microsoft · Windows Server, version 1903 (Server Core installation)
- affected unspecified
Microsoft · Windows 10 Version 1909 for 32-bit Systems
- affected unspecified
Microsoft · Windows 10 Version 1909 for x64-based Systems
- affected unspecified
Microsoft · Windows 10 Version 1909 for ARM64-based Systems
- affected unspecified
Microsoft · Windows Server, version 1909 (Server Core installation)
- affected unspecified
References (8)
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0796 (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/156731/CoronaBlue-SMBGhost-Microsoft-Windows-10-SMB-3.1.1-Proof-Of-Concept.html (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/156732/Microsoft-Windows-SMB-3.1.1-Remote-Code-Execution.html (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/156980/Microsoft-Windows-10-SMB-3.1.1-Local-Privilege-Escalation.html (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/157110/SMBv3-Compression-Buffer-Overflow.html (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/157901/Microsoft-Windows-SMBGhost-Remote-Code-Execution.html (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/158054/SMBleed-SMBGhost-Pre-Authentication-Remote-Code-Execution-Proof-Of-Concept.html (opens in a new tab)x_refsource_MISCx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0796 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-0796)Record last updated .