CVE DATABASE / CVE-2017-7494
CVE-2017-7494
Samba Remote Code Execution Vulnerability
CVSS 9.8 · CRITICAL
⚠ CISA KEV — ACTIVELY EXPLOITED
RANSOMWARE
On the CISA KEV catalog
Confirmed exploited in the wild. Added 2023-03-30.
Federal remediation due 2023-04-20.
Required action: Apply updates per vendor instructions.
Summary
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.
CVSS 3.1 breakdown
| Base score | 9.8 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Samba sambaDebian debian linux
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References
- http://www.debian.org/security/2017/dsa-3860
- http://www.securityfocus.com/bid/98636
- http://www.securitytracker.com/id/1038552
- https://access.redhat.com/errata/RHSA-2017:1270
- https://access.redhat.com/errata/RHSA-2017:1271
- https://access.redhat.com/errata/RHSA-2017:1272
- https://access.redhat.com/errata/RHSA-2017:1273
- https://access.redhat.com/errata/RHSA-2017:1390
- https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Name=SEVD-2018-095-01+Security+Notification+Umotion+V1.1.pdf&p_Doc_Ref=SEVD-2018-095-01
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbns03755en_us
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03759en_us
- https://security.gentoo.org/glsa/201805-07
- https://security.netapp.com/advisory/ntap-20170524-0001/
- https://www.exploit-db.com/exploits/42060/
- https://www.exploit-db.com/exploits/42084/
Data: NIST NVD + CISA KEV. NVD last modified 2026-04-21. Always verify against the vendor advisory before acting.