Microsoft Windows SMBv1 Information Disclosure Vulnerability
Microsoft · SMBv1 server
CVSS 7.5
EPSS 100%
5 public exploits
ransomware
Fix deadline passed 14 June 2022
What it is
The SMBv1 server in Microsoft Windows allows remote attackers to obtain sensitive information from process memory via a crafted packet.
Why we say that
- Linked by CISA to known ransomware campaigns
- EPSS puts exploitation in the next 30 days at 100%
- 5 public exploits published
- CISA's federal remediation deadline (2022-06-14) has passed
- Listed in the CISA Known Exploited Vulnerabilities catalogue
Every line above comes from a named public source. Where the evidence is thin, we say so rather than inventing confidence — see methodology.
What to do
Apply updates per vendor instructions.
Public exploit code
Indexed from Exploit-DB. Presence of code raises urgency; absence does not mean safety.
- DOUBLEPULSAR - Payload Execution and Neutralization (Metasploit)
- DOUBLEPULSAR - Payload Execution and Neutralization (Metasploit)
- Microsoft Windows - 'EternalRomance'/'EternalSynergy'/'EternalChampion' SMB Remote Code Execution (Metasploit) (MS17-010)
- Microsoft Windows Server 2008 R2 (x64) - 'SrvOs2FeaToNt' SMB Remote Code Execution (MS17-010)
- Microsoft Windows - SMB Remote Code Execution Scanner (MS17-010) (Metasploit)
What it costs when this goes wrong
This is where UK enforcement meets the vulnerability record. This vulnerability is used in ransomware campaigns; here is what ransomware has cost UK organisations at the regulator.
- Advanced Computer Software Group Limited The Information Commissioner’s Office (ICO) has fined Advanced Computer Software Group Ltd (Advanced) £3.07m for security failings…
- Optionis Group Limited The data controller suffered a ransomware attack, which resulted in the exfiltration of personal data. A reprimand was issued in r…