CVE-2017-0143

Confirmed PUBLISHED

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;...

Microsoft Corporation · Windows SMB

Exploited in the wild Used in malware PoC available

Recommended Action

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

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Confidence

Confirmed

Exploitation Status

Exploited in the wild

Observed in Sensors

Attempts (30d)

—

Unique Attacker IPs

—

CISA KEV

In CISA KEV

CVSS / EPSS

8.8 High EPSS 93.3%

At a Glance

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 execute arbitrary code via crafted packets, aka "Windows SMB Remote Code Execution Vulnerability." This vulnerability is different from those described in CVE-2017-0144, CVE-2017-0145, CVE-2017-0146, and CVE-2017-0148.

ransomware cisa microsoft malware metasploit windows

CVE Published: Mar 17, 2017
Exploitation Reported: Nov 03, 2021
CVSS: 8.8 High
EPSS: 93.3%

Remote Low complexity No user interaction

Affected Versions

Vendor	Product	Version	Status
Microsoft Corporation	Windows SMB	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	Affected

CVE References

41891 exploit-db.com · Exploit https://www.exploit-db.com/exploits/41891/
41987 exploit-db.com · Exploit https://www.exploit-db.com/exploits/41987/
43970 exploit-db.com · Exploit https://www.exploit-db.com/exploits/43970/
96703 securityfocus.com · VDB Entry http://www.securityfocus.com/bid/96703
1037991 securitytracker.com · VDB Entry http://www.securitytracker.com/id/1037991

Show 6 more references

cert-portal.siemens.com/productcert/pdf/ssa-701903.pdf cert-portal.siemens.com · CVE Record https://cert-portal.siemens.com/productcert/pdf/ssa-701903.pdf
ics-cert.us-cert.gov/advisories/ICSMA-18-058-02 ics-cert.us-cert.gov · CVE Record https://ics-cert.us-cert.gov/advisories/ICSMA-18-058-02
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0143 portal.msrc.microsoft.com · CVE Record https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CV...
cert-portal.siemens.com/productcert/pdf/ssa-966341.pdf cert-portal.siemens.com · CVE Record https://cert-portal.siemens.com/productcert/pdf/ssa-966341.pdf
packetstormsecurity.com/files/154690/DOUBLEPULSAR-Payload-Execution-... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/154690/DOUBLEPULSAR-Payload-Exec...
packetstormsecurity.com/files/156196/SMB-DOUBLEPULSAR-Remote-Code-Ex... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/156196/SMB-DOUBLEPULSAR-Remote-C...

Recommended Actions

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.

Known Exploited Vulnerability Sources

Catalogues that list this CVE as a known exploited vulnerability.

Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.

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Source	Added
CISA First	2021-11-03 00:00 UTC
Tenable Blog	2026-06-02 14:21 UTC

Scanner Artifacts

Nuclei and Metasploit references linked to this CVE.

Scanner	Reference	Detected
Metasploit	https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/smb/smb_doublepulsar_rce.rb	Apr 29, 2025

CVSS Scores

CVSS v3.1 8.8 High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 9.3 High

AV:N/AC:M/Au:N/C:C/I:C/A:C

Exploitation Status

Exploited in the wild

Recorded 2021-11-03 00:00:00 UTC · CISA

Used in malware

Recorded 2021-11-03 00:00:00 UTC · CISA

Proof of concept available

Recorded 2021-07-08 17:35:50 UTC · GitHub

Scanner Integrations

Scanner	Reference	Detected
Metasploit	https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/smb/smb_doublepulsar_rce.rb	Apr 29, 2025

Recent Mentions

Inside the customer environment: Where threat actors, vulnerabilities, and exposed assets intersect

Tenable Blog · May 27, 2026

Tenable Research has developed a graph-based model linking 600+ threat groups to real-world customer exposures. It reveals which vulnerabilities sit at the intersection of severity, active exploitation, and organizational risk.Key takeawaysThe "patch everything" strategy is dead: Vulnerability prioritization based on exploitation risk offers a path forward. A directed graph model linking 600+ threat actors to vulnerabilities in 7,800 customer environments reveals that 68% of organizations carry at least one CVE previously exploited by a named adversary, and 321 tracked threat groups can reach at least one customer environment through an active vulnerability. Prevalence of "Elite Arsenal" CVEs requires immediate attention: The 242 "Elite Arsenal" CVEs — those meeting all three criteria of critical VPR (≥ 9), CISA KEV listing, and documented threat group exploitation — are nearly universally present across the studied customer base, with 241 of 242 actively detected. More than half are five or more years old, and 78% of the persistently exploited core are simultaneously weaponized by nation-state APTs, commodity malware operators, and ransomware gangs. Non-CVE exposures are universally dangerous: Non-CVE exposures, including misconfigurations, weak credentials, and end-of-life software, are present in virtually 100% of studied organizations, with 60% carrying at least one that maps to a tracked threat actor's preferred techniques. Preliminary modeling suggests these exposures may confer more breach risk than CVE-linked findings, yet no industry-standard scoring infrastructure exists to prioritize them.While the first two posts in this blog series documented the accelerating vulnerability flood and the widening remediation gap, today we answer the outstanding question: Where do these forces actually collide inside customer environments? Using a directed graph model that maps more than 600 tracked threat groups to vulnerabilities observed across 7,800 organizations,...

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

n3rdh4x0r/MS17-010_CVE-2017-0143

github · Created 2021-07-08 17:35:50 UTC · 37 stars

MS17-010_CVE-2017-0143

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Pro API Example

GET /api/v2/pro/kevs/CVE-2017-0143

{
  "cve_id": "CVE-2017-0143",
  "title": "The SMBv1 server in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and ...",
  "affected_vendor": "Microsoft Corporation",
  "affected_product": "Windows SMB",
  "affected_versions": [
    { "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
  ],
  "confidence": "Confirmed",
  "cvss_score": 8.8,
  "epss_score": 0.93307,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "...": "Pro API fields" },
  "proof_of_concepts": [ "..." ],
  "scanner_integrations": [ "..." ]
}

The free JSON API returns basic KEV fields only. Confidence, telemetry, and artifact enrichment require Pro API access.

CVE-2017-0143

At a Glance

Affected Versions

CVE References

Recommended Actions

Known Exploited Vulnerability Sources

Scanner Artifacts

Virtual Patch

CVSS Scores

Exploitation Status

Scanner Integrations

Recent Mentions

Potential Proof of Concepts

Timeline

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