CVE-2017-7494
Samba Remote Code Execution Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 20 April 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.45% probability · 100th percentile
- Public exploits
- 2 in Exploit-DB · verified · first 24 May 2017
- CISA KEV
- Listed 30 March 2023 · due 20 April 2023 · used in ransomware campaigns
- Weakness
- CWE-94
- Affected
- samba/samba · debian/debian linux
- Source
- secalert@redhat.com
EPSS 99.4% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://www.samba.org/samba/security/CVE-2017-7494.html; https://nvd.nist.gov/vuln/detail/CVE-2017-7494
Public exploits (2)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.debian.org/security/2017/dsa-3860Third Party Advisory
- http://www.securityfocus.com/bid/98636Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038552Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:1270Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1271Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1272Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1273Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1390Third Party Advisory
- 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-2018-095-01Third Party Advisory
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbns03755en_usThird Party Advisory
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03759en_usThird Party Advisory
- https://security.gentoo.org/glsa/201805-07Third Party Advisory
- https://security.netapp.com/advisory/ntap-20170524-0001/Third Party Advisory
- https://www.exploit-db.com/exploits/42060/Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/42084/Third Party Advisory, VDB Entry
- https://www.samba.org/samba/security/CVE-2017-7494.htmlPatch, Vendor Advisory
- http://www.debian.org/security/2017/dsa-3860Third Party Advisory
- http://www.securityfocus.com/bid/98636Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038552Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:1270Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1271Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1272Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1273Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1390Third Party Advisory
- 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-2018-095-01Third Party Advisory
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbns03755en_usThird Party Advisory
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03759en_usThird Party Advisory
- https://security.gentoo.org/glsa/201805-07Third Party Advisory
- https://security.netapp.com/advisory/ntap-20170524-0001/Third Party Advisory
- https://www.exploit-db.com/exploits/42060/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.