KEV Intelligence

Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2017-7494

samba Remote Code Execution

Samba / samba · since 3.5.0

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Severity
CVSS 9.8 · Critical
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
99.4%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2017-7494 is an unauthenticated vulnerability affecting Samba samba. Samba since version 3.5.0 and before 4.6.4, 4.5.10 and 4.4.14 is vulnerable to remote code execution vulnerability, allowing a malicious client...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.

Who is affected?

Samba / samba since 3.5.0.

What should we do?

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

Overview

samba Remote Code Execution

Samba since version 3.5.0 and before 4.6.4, 4.5.10 and 4.4.14 is vulnerable to remote code execution vulnerability, allowing a malicious client to upload a shared library to a writable share, and then cause the server to load and execute it.

Vendor Product Affected Status
Samba samba since 3.5.0 Affected
View vendor advisory (opens in new tab)
Published
30 May 2017
Exploitation Reported
30 Mar 2023
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

malware windows cisa metasploit ransomware

CVE References

  • CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2017-7494
  • DSA-3860 debian.org · Vendor Advisory http://www.debian.org/security/2017/dsa-3860
  • RHSA-2017:1270 access.redhat.com · Vendor Advisory https://access.redhat.com/errata/RHSA-2017:1270
  • RHSA-2017:1390 access.redhat.com · Vendor Advisory https://access.redhat.com/errata/RHSA-2017:1390
  • RHSA-2017:1273 access.redhat.com · Vendor Advisory https://access.redhat.com/errata/RHSA-2017:1273
  • RHSA-2017:1271 access.redhat.com · Vendor Advisory https://access.redhat.com/errata/RHSA-2017:1271
  • GLSA-201805-07 security.gentoo.org · Vendor Advisory https://security.gentoo.org/glsa/201805-07
  • RHSA-2017:1272 access.redhat.com · Vendor Advisory https://access.redhat.com/errata/RHSA-2017:1272
  • 42084 exploit-db.com · Exploit https://www.exploit-db.com/exploits/42084/
  • 42060 exploit-db.com · Exploit https://www.exploit-db.com/exploits/42060/
  • 98636 securityfocus.com · VDB Entry http://www.securityfocus.com/bid/98636
  • 1038552 securitytracker.com · VDB Entry http://www.securitytracker.com/id/1038552
  • samba.org/samba/security/CVE-2017-7494.html samba.org · CVE Record https://www.samba.org/samba/security/CVE-2017-7494.html
  • download.schneider-electric.com/files download.schneider-electric.com · CVE Record https://download.schneider-electric.com/files?p_enDocType=Technical+l...
  • h20566.www2.hpe.com/hpsc/doc/public/display h20566.www2.hpe.com · CVE Record https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&d...
  • security.netapp.com/advisory/ntap-20170524-0001 security.netapp.com · CVE Record https://security.netapp.com/advisory/ntap-20170524-0001/
  • h20566.www2.hpe.com/hpsc/doc/public/display h20566.www2.hpe.com · CVE Record https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&d...

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 30 Mar 2023

Independent exploitation attestation added to the KEV Intelligence record.

Used in malware

CISA

Recorded 30 Mar 2023

Malware families have been linked to exploitation of this CVE.

Proof of concept available

GitHub

Recorded 25 May 2017

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

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

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Source Added
CISA First 2023-03-30 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
0
User-Agents
0

Raw values available in Pro and Enterprise.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Metasploit https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/samba/is_known_pipename.rb 28 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

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

EPSS

99.4%

Weaknesses

Improper Control of Generation of Code ('Code Injection') CWE-94

All CVSS Scores

CVSS v3.1 9.8 Critical

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

CVSS v2.0 10.0 High

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

Potential Proof of Concepts

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

is_known_pipename

metasploit · Created Unknown

Metasploit module for CVE-2017-7494

Timeline

From disclosure to observed exploitation

  1. Metasploit module available

    Exploit module available

  2. Public PoC available

    Public proof-of-concept code published

  3. Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  4. First public exploitation report

    Exploit observed in malware

  5. CVE published

    Vulnerability disclosed publicly

  6. CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2017-7494

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2017-7494",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.99448,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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