ACTIVELY EXPLOITED
CVE-2020-0796: Microsoft SMBv3 Remote Code Execution Vulnerability
| Vendor | Microsoft |
|---|---|
| Product | SMBv3 |
| Actively exploited | Yes |
| Added to CISA KEV | 10 Feb 2022 |
| CISA federal deadline | 10 Aug 2022 |
| Ransomware use | Known |
| Weakness (CWE) | CWE-119 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests. An attacker who successfully exploited the vulnerability could gain the ability to execute code on the target server or client.
SOURCES
Other Microsoft flaws
- patchtuesday:2026-11: Vulnerability in Microsoft
- CVE-2026-124194: Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability
- CVE-2026-96951: Microsoft Windows Command Injection Vulnerability
- CVE-2026-65660: Microsoft SharePoint Code Injection Vulnerability
- CVE-2026-85880: Microsoft Windows Heap-Based Buffer Overflow Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.