Assessment
Why it matters
CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 99.7%; technical severity is CVSS 7.5.
The SMBv1 server in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7 SP1; Windows 8.1; Windows Server 2012 Gold and R2; Windows RT 8.1; and Windows 10 Gold, 1511, and 1607; and Windows Server 2016 allows remote attackers to obtain sensitive information from process memory via a crafted packets, aka "Windows SMB Information Disclosure Vulnerability."
Who should care
- Teams operating SMBv1 server, Windows 10 1507, Windows 10 1511 +16 more
- Vulnerability and exposure management teams
- Security operations teams monitoring exploitation activity
Response plan
What I would do
- Confirm whether SMBv1 server, Windows 10 1507, Windows 10 1511 +16 more is present in the environment.
- Identify affected versions and establish whether vulnerable services are exposed or reachable.
- Apply updates per vendor instructions.
- Review relevant security telemetry for evidence of attempted or successful exploitation.
- Document the remediation decision and track it to verified completion.
Vendor remediation
Patch and remediation links
Use the vendor source below to confirm the correct fixed version, package or mitigation for your affected product.
Technical details
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CWE
- CWE-200
- Affected versions
- Microsoft SMBv1 server; Microsoft Windows 10 1507 (Version: -); Microsoft Windows 10 1511 (Version: -); Microsoft Windows 10 1607 (Version: -); Microsoft Windows 7 (Version: -); Microsoft Windows 8.1 (Version: -); Microsoft Windows Rt 8.1 (Version: -); Microsoft Windows Server 2008 (Version: r2)
- Published
- 16 March 2017
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
Signal timeline
- CVE published
- Added to CISA KEV
- Latest EPSS score: 99.7%
- Signal calculated at 86
External references
- Government advisory from www.cisa.gov
- Exploit information from packetstormsecurity.com
- Exploit information from packetstormsecurity.com
- Third-party advisory from www.securityfocus.com
- Third-party advisory from www.securitytracker.com
- Third-party advisory from cert-portal.siemens.com
- Third-party advisory from cert-portal.siemens.com
- Government advisory from ics-cert.us-cert.gov
- Exploit information from www.exploit-db.com
- Exploit information from www.exploit-db.com
- Exploit information from www.exploit-db.com