UpHeron
All vulnerabilities

Servers and applications

CVE-2017-7494

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.

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 30 Mar 2023.

Severity
Critical 9.8
Published
30 May 2017
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.4.0, 4.4.14, 4.5.10, 4.6.4
Exploit chance
99% in the next 30 daysHigher than 99% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
Code injection (CWE-94)
Attack
Over the network · No login needed · No user action needed
Attacker can
Read data · Change data · Take it down
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Sources
NVD

Affected software

SoftwareAffected versions
SambaServers and applications · cpe:a:samba:samba
  • From 3.5.0 before 4.4.0
  • From 4.4.0 before 4.4.14
  • From 4.5.0 before 4.5.10
  • From 4.6.0 before 4.6.4

Known exploited

CISA name
Samba Remote Code Execution Vulnerability
Required action
Apply updates per vendor instructions.
Due for US agencies
20 Apr 2023
Used in ransomware
Yes, known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2017-7494
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2017-7494