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CVE-2017-7494

9.8, critical Known exploited Used in ransomware

Samba Remote Code Execution Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
9.8, critical critical CVSS v3.1
EPSS, next 30 days
99% higher than 99.9% of scored CVEs
Exploitation
Confirmed in the wild
Published
30 May 20179 years ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 30 Mar 2023 and links it to ransomware activity. US federal agencies had to remediate by 20 Apr 2023, a deadline that has passed.

Required action. Apply updates per vendor instructions.

Description

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.

Details

Vendor
Samba
Product
samba
Weakness
CWE-94 (opens in a new tab)
Status
Analyzed
Updated
17 Jun 2026
Assigner
secalert@redhat.com

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

References 17

Exploit code 2

Patches and fixes 1

Advisories 13

5 more

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Beyond this page

Is CVE-2017-7494 in your network?

This page tells you how dangerous CVE-2017-7494 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2017-7494 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 16 Oct 2026, not the live upstream state.