CVE-2020-0796: Windows SMBv3 RCE (SMBGhost)
Summary
SMBv3 protocol in Windows 10 and Server 2019 allows remote code execution via crafted compressed SMBv3 packets (SMBGhost).
Why It Matters
CRITICAL severity — known to be exploited in the wild（CISA KEV）；action required: Apply updates per vendor instructions. ；affects Microsoft Windows 10 1903, Windows 10 1909, Windows Server 2019 1903 and more.
Current Status
- Vulnerability status: Known exploited (CISA KEV)
- Last intelligence update: 2026-10-27 · source: NVD
- CISA KEV added: 2022-02-10 · remediation deadline: 2022-08-10
Entity Activity Timeline
- 2022-02-10 — Added to CISA KEV as known-exploited · action: Apply updates per vendor instructions.
- 2020-03-10 — NVD publication / disclosure
- 2026-10-27 — Intelligence record updated（NVD sync）
Severity
CRITICAL
CVSS Score: 10
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Known Exploited (CISA KEV)
Known Exploited Vulnerability
Added: 2022-02-10 · Remediation deadline: 2022-08-10
Apply updates per vendor instructions.
Source Attribution
Source: NVD · Updated: 2026-10-27T00:00:00.000 · Confidence: high
Impact
Based on CVSS vector: AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H — assess confidentiality, integrity, and availability impact via the official vector documentation.
Affected Software
- Microsoft Windows 10 1903 (Unknown)
- Windows 10 1909 (Unknown)
- Windows Server 2019 1903 (Unknown)
- Windows Server 2019 1909 (Unknown)
Fix
Upgrade affected software to the fixed version identified above. Apply vendor patches and monitor advisories before exposed systems go unpatched.
Sources & Evidence
Export threat intelligence
Download an OASIS STIX 2.1 threat-intelligence bundle (JSON) for MISP / OpenCTI / TAXII import
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