CVE-2017-0147
Microsoft Windows SMBv1 Information Disclosure Vulnerability
- High 7.5
- Exploited: added to CISA KEV 24 May 2022
- Used in ransomware campaigns
- A public exploit reference is listed
Description
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."
Key facts
- Published
- 17 Mar 2017
- Last changed
- 21 Oct 2025
- Assigned by
- microsoft
- KEV added
- 24 May 2022
- KEV fix due
- 14 Jun 2022
- Used in ransomware
- Yes, according to CISA
- EPSS
- 99.693% likely to be exploited in the next 30 days, higher than 99.951% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: partial
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 7.5CVSS 3.1, Highfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft Corporation | Windows SMB |
|
Timeline
- 17 Mar 2017 Published
- 24 May 2022 CVE-2017-0147 added to CISA KEV
- 24 May 2022 Added to the CISA KEV catalogue