CVE-2020-0796: Microsoft SMBv3 Remote Code Execution Vulnerability
CVE-2020-0796 · Severity: critical · CVSS 10 · Exploited in the wild · Published 2022-02-10
A remote code execution vulnerability exists in the Microsoft Server Message Block 3.1.1 (SMBv3) protocol due to improper handling of certain requests. An unauthenticated attacker could exploit this to execute arbitrary code on a target SMB server or client.
Yes. CVE-2020-0796 is known to be exploited in the wild, first recorded on 10 February 2022. Treat it as urgent.
How severe is CVE-2020-0796?
Critical severity, with a CVSS score of 10, published 10 February 2022.
Which products and versions are affected?
Microsoft Windows 10 1903, 1909; Microsoft Windows Server 1903, 1909.
Is there a fix for CVE-2020-0796?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2020-0796 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2020-0796?
Check whether you run Microsoft SMBv3. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Microsoft Windows 10 1903, 1909
Microsoft Windows Server 1903, 1909
Timeline
2020-03-12: advisory: Initial Microsoft advisory published
2022-02-10: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
2022-02-10: disclosed: Publicly disclosed date per NVD record