CISA KEV · Known exploitedCritical

CVE-2017-7494

Samba

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
9.8
EPSS
99.4%
99.9% percentile
CISA KEV
Listed
Published
2017.05.31
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability99.4%
Technical severityCVSS 9.8

Vulnerability overview

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.

Affected product and versions

Product
Samba
Affected versions
since 3.5.0, >= 3.5.0 < 4.4.0, >= 4.4.0 < 4.4.14, >= 4.5.0 < 4.5.10, >= 4.6.0 < 4.6.4, 8.0
Fixed versions
4.4.0, 4.4.14, 4.5.10, 4.6.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2023.04.20
  1. 1
    Identify

    Confirm that Samba and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-94
KEV added
2023.03.30
Ransomware use
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CVE-2017-7494 — Samba | SECUFOCUS NOW