CVE-2020-0796

Published Mar 12, 2020

Last updated a month ago

Exploit knownCVSS critical 10.0
VDI
Smb
hsm
C++
web application
Zero-day
Msrpc

Overview

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'.
Source
secure@microsoft.com
NVD status
Analyzed
Products
windows_10_1903, windows_10_1909, windows_server_1903, windows_server_1909

Risk scores

CVSS 3.1

Type
Primary
Base score
10
Impact score
6
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Severity
CRITICAL

CVSS 2.0

Type
Primary
Base score
7.5
Impact score
6.4
Exploitability score
10
Vector string
AV:N/AC:L/Au:N/C:P/I:P/A:P

Known exploits

Data from CISA

Vulnerability name
Microsoft SMBv3 Remote Code Execution Vulnerability
Exploit added on
Feb 10, 2022
Exploit action due
Aug 10, 2022
Required action
Apply updates per vendor instructions.

Weaknesses

nvd@nist.gov
CWE-119
134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE-119

Social media

Hype score
Not currently trending
  1. This week's KEV entries: CVE-2021-44228 (Apache), CVE-2026-10520 (Ivanti), CVE-2025-10035 (Fortra), CVE-2020-0796 (Microsoft), CVE-2025-55182 (Meta). All are critical with confirmed exploitation. Prioritize based on your asset inventory. #Ivanti #ThreatIntel #CyberSecurity

    @BytesNora

    2 Nov 2026

    155 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  2. This week's KEV entries: CVE-2021-44228 (Apache), CVE-2026-10520 (Ivanti), CVE-2020-0796 (Microsoft), CVE-2025-55182 (Meta), CVE-2025-10035 (Fortra). All critical, all exploited. Prioritize based on your asset inventory. #Ivanti #ThreatIntel #CyberSecurity

    @BytesNora

    26 Oct 2026

    1 Impression

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  3. Diese Woche: Alle Schwachstellen im KEV-Katalog sind kritisch. CVE-2021-44228 (Apache), CVE-2026-10520 (Ivanti), CVE-2020-0796 (Microsoft), CVE-2025-55182 (Meta), CVE-2025-10035 (Fortra) haben CVSS 10.0 und hohe EPSS. Priorisieren Sie nach Ihrem Bestand. #Ivanti #ThreatIntel

    @BytesNora

    12 Oct 2026

    2 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  4. All these KEV entries are exploited. CVE-2021-44228 (Apache), CVE-2026-10520 (Ivanti), CVE-2020-0796 (Microsoft), CVE-2025-55182 (Meta), CVE-2025-10035 (Fortra) all have CVSS 10.0 and EPSS >99%. Prioritize based on your asset inventory. #Ivanti #ThreatIntel #CyberSecurity

    @BytesNora

    28 Sept 2026

    3 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  5. All these KEV-cataloged vulns are exploited. CVE-2021-44228 (Apache), CVE-2026-10520 (Ivanti), CVE-2025-32432 (Craft CMS), CVE-2020-0796 (Microsoft), CVE-2025-55182 (Meta) all have CVSS 10.0, EPSS 100%, SecBoard Risk 85. Prioritize based on your assets. #Ivanti #ThreatIntel

    @BytesNora

    21 Sept 2026

    9 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  6. All 5 KEV-listed vulns this week are critical (CVSS 10.0, EPSS 100%). But not all deserve equal urgency. CVE-2021-44228 (Apache), CVE-2026-10520 (Ivanti), CVE-2025-32432 (Craft CMS), CVE-2020-0796 (Microsoft), CVE-2025-55182 (Meta). Prioritize based on your asset inventory.

    @BytesNora

    14 Sept 2026

    5 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  7. This week's KEV additions: CVE-2021-44228 (Apache), CVE-2026-10520 (Ivanti), CVE-2025-32432 (Craft CMS), CVE-2020-0796 (Microsoft), CVE-2025-55182 (Meta). All are actively exploited. Prioritize based on your asset inventory, not just CVSS 10.0 scores.

    @BytesNora

    7 Sept 2026

    6 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

Configurations

References

Sources include official advisories and independent security research.