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Known exploited vulnerability

CVE-2017-7494

criticalCVSS 3.1 9.8In CISA KEVRansomwareEPSS 99%Published · Samba

The short answer

CVE-2017-7494 affects Samba samba and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2023-03-30: attackers are using it, so patch it first.

What it is

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.

Weakness: CWE-94.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Mar 30, 2023

Federal due date Apr 20, 2023

EPSS, next 30 days

99%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

samba. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2017-7494 being exploited?

Yes. CISA added CVE-2017-7494 to its Known Exploited Vulnerabilities catalog on 2023-03-30, with a federal remediation due date of 2023-04-20. CISA lists it as used in ransomware campaigns.

How do I fix CVE-2017-7494?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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