CVE-2020-0796

Microsoft SMBv3 Remote Code Execution Vulnerability

Microsoft SMBv3

CVSS

10.0Critical

ExploitationExploited in the wildAdded to KEV 10 Feb 2022. Known ransomware useCISA KEV

Exploit odds (EPSS)99.8%Chance of exploitation activity in the next 30 days, higher than 99.9% of CVEs. Scored 23 Oct 2026FIRST EPSS

Fixed inNone listedNo source names a fixed version. Check the vendor advisory below

Federal deadline10 Aug 2022Remediation due date for US federal agenciesCISA KEV

CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

12 Mar 2020, 15:48 UTCPublishedCVE List
13 Mar 2020Exploit code publicMetasploit
10 Feb 2022Added to CISA KEVCISA KEV

Public exploit code and templates 6

Exploit moduleSMBv3 Compression Buffer Overflow 13 Mar 2020Metasploit
Exploit moduleSMBv3 Compression Buffer Overflow 13 Mar 2020Metasploit
Remote exploitMicrosoft Windows - 'SMBGhost' Remote Code Execution 2 Jun 2020Exploit-DB
Dos exploitMicrosoft Windows 10 (1903/1909) - 'SMBGhost' SMB3.1.1 'SMB2_COMPRESSION_CAPABILITIES' Buffer Overflow (PoC) 14 Mar 2020Exploit-DB
Local exploitMicrosoft Windows 10 (1903/1909) - 'SMBGhost' SMB3.1.1 'SMB2_COMPRESSION_CAPABILITIES' Local Privilege Escalation 30 Mar 2020Exploit-DB
Scanner templateMicrosoft SMBv3 - Remote Code ExecutionNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

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.

Text from CVE List

Affected versions 8