Risk Letters

Exploited vulnerability

CVE-2020-0796

TLP:CLEAR

Microsoft SMBv3 Remote Code Execution Vulnerability

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.

Facts

  • Vendor: Microsoft
  • Product: SMBv3
  • CVSS: 10
  • EPSS (probability of exploitation within 30 days): 99.8 %
  • On CISA's Known Exploited Vulnerabilities list since: 10 February 2022
  • First known exploitation: 10 February 2022
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 10 August 2022
  • Weakness: CWE-119
  • First seen by Risk Letters: 10 February 2022

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD