boxscore/security
CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2020-0796CRITICAL
Microsoft SMBv3
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS    %ile   KEV
   N   L   N   N  C  H  H  H   10.0   .9981   100.0   YES
AFFECTED
  Product                                                  Versions       Fixed
  Windows 10 Version 1903 for 32-bit Systems               unspecified –  —
  Windows 10 Version 1903 for x64-based Systems            unspecified –  —
  Windows 10 Version 1903 for ARM64-based Systems          unspecified –  —
  Windows Server, version 1903 (Server Core installation)  unspecified –  —
  Windows 10 Version 1909 for 32-bit Systems               unspecified –  —
  Windows 10 Version 1909 for x64-based Systems            unspecified –  —
  Windows 10 Version 1909 for ARM64-based Systems          unspecified –  —
  Windows Server, version 1909 (Server Core installation)  unspecified –  —
TIMELINE
  Nov 4   Reserved by microsoft
  Feb 10  Added to CISA KEV, remediation due 2022-08-10
  Feb 10  Published (CNA: microsoft)
  Aug 12  EXPLOIT PUBLISHED — CVE-2020-0796 (Microsoft Windows 10 Version 1903 for 32-bit Systems). Public exploit reference added.
CWE-119 · CNA: microsoft · CVSS v3.1 · 8 references · NVD status: Analyzed · KEV due August 10, 2022

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'.

Lifecycle

Complete event history — 4 events, chronological
DateEventDetail
November 4, 2019ReservedReserved by microsoft
February 10, 2022KEV ADDEDAdded to CISA KEV, remediation due 2022-08-10
February 10, 2022PublishedPublished (CNA: microsoft)
August 12, 2026EXPLOIT PUBLISHEDEXPLOIT PUBLISHED — CVE-2020-0796 (Microsoft Windows 10 Version 1903 for 32-bit Systems). Public exploit reference added.

Affected

Affected products and packages — 8 rows
VendorProduct / PackageEcosystemVersion introducedFixed
MicrosoftWindows 10 Version 1903 for 32-bit Systems—unspecified—
MicrosoftWindows 10 Version 1903 for x64-based Systems—unspecified—
MicrosoftWindows 10 Version 1903 for ARM64-based Systems—unspecified—
MicrosoftWindows Server, version 1903 (Server Core installation)—unspecified—
MicrosoftWindows 10 Version 1909 for 32-bit Systems—unspecified—
MicrosoftWindows 10 Version 1909 for x64-based Systems—unspecified—
MicrosoftWindows 10 Version 1909 for ARM64-based Systems—unspecified—
MicrosoftWindows Server, version 1909 (Server Core installation)—unspecified—

Weaknesses

CWE-119

References (8)

Related

Authoritative record: CVE-2020-0796 at cve.org

Vendors: microsoft

Weaknesses: CWE-119

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-0796 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.