CVE-2017-0147: Microsoft Windows SMBv1 Information Disclosure Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 24 May 2022, 1,894 days after the CVE record was published.
- How likely is exploitation in the next 30 days?
- 99.7%
EPSS score, percentile 100 of all scored records
- How severe?
- 7.5 High
CVSS v3.1 base score, from CISA's enrichment of the record
- What should I do?
CISA deadline 14 Jun 2022. Apply updates per vendor instructions.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected
- The SMBv1 server in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2…
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
What to do
Required action, set by CISA
Apply updates per vendor instructions.
CISA due date for this action: 14 June 2022.
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
Linked from CISA's catalog entry
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | The SMBv1 server in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2… |
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
About this vulnerability
The SMBv1 server in Microsoft Windows allows remote attackers to obtain sensitive information from process memory via a crafted packet.
Summary: CISA's KEV catalog, as of 28 Oct 2026.
- CISA added CVE-2017-0147 to its Known Exploited Vulnerabilities (KEV) catalog on 24 May 2022.
- CISA marks it as known to be used in ransomware campaigns.
- The due date CISA sets for the required action is 14 Jun 2022.
- The CVE record was published on 17 Mar 2017, 1,894 days before it was added to KEV.
- The CVE record carries a CVSS v3.1 base score of 7.5 (High), taken from CISA's enrichment of the record.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 99.7% (percentile 100), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable yes, technical impact partial.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.
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."
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Weakness
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.
Timeline
| Date | Event |
|---|---|
| 17 Mar 2017 | CVE record published |
| 24 May 2022 | Added to CISA KEV |
| 14 Jun 2022 | CISA due date for the required action |
| 21 Oct 2025 | CVE record last updated |
References
- 41891
- 41987
- 43970
- 1037991
- 96709
- cert-portal.siemens.com
- ics-cert.us-cert.gov
- cert-portal.siemens.com
- portal.msrc.microsoft.com
- packetstormsecurity.com
- packetstormsecurity.com
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