What is CVE-2017-7494?

CVE-2017-7494 is a critical-severity vulnerability in Samba, classified under Code Injection. CVSS score: 9.8/10. Published 2017-05-30.

How severe is CVE-2017-7494?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2017-7494 known to be exploited?

Yes. CVE-2017-7494 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-03-30), indicating it is being actively exploited. 330 public proof-of-concept repositories are indexed.

RCE in Samba

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 i…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.994 (99.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 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.

Affected products

Samba — versions since 3.5.0
Debian Debian_linux — versions 8.0

Weakness classification (CWE)

CWE-94 — Code Injection

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2023-03-30. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2023-04-20.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
secalert@redhat.com (VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)
secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
secalert@redhat.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2017-7494?: CVE-2017-7494 is a critical-severity vulnerability in Samba, classified under Code Injection. CVSS score: 9.8/10. Published 2017-05-30.
How severe is CVE-2017-7494?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-7494 known to be exploited?: Yes. CVE-2017-7494 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-03-30), indicating it is being actively exploited. 330 public proof-of-concept repositories are indexed.