CVE-2017-7494
CRITICALCVSS 9.8/10Actively ExploitedEPSS 99.45%
Last modified
CVE-2017-7494 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 99.45% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Samba | Samba | >= 3.5.0, < 4.4.0 |
| Samba | Samba | >= 4.4.0, < 4.4.14 |
| Samba | Samba | >= 4.5.0, < 4.5.10 |
| Samba | Samba | >= 4.6.0, < 4.6.4 |
| Debian | Debian Linux | 8.0 |
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://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://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
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-7494US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is 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.
How severe is CVE-2017-7494?
CVE-2017-7494 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 99.45% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2017-7494?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2017-7494?
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Scan your code nowSource: NVD / NIST