Is CVE-2019-9579 actively exploited?

No active exploitation of CVE-2019-9579 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-9579 be exploited remotely?

Yes. CVE-2019-9579 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-9579?

CVE-2019-9579 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2019-9579

HIGH

CVE-2019-9579

NVD-CWE-OtherPublished: December 26, 2022· Updated: Jun 17, 2026

8.1

CVSS v3.1

Official Description

An issue was discovered in Illumos in Nexenta NexentaStor 4.0.5 and 5.1.2, and other products. The SMB server allows an attacker to have unintended access, e.g., an attacker with WRITE_XATTR can change permissions. This occurs because of a combination of three factors: ZFS extended attributes are used to implement NT named streams, the SMB protocol requires implementations to have open handle semantics similar to those of NTFS, and the SMB server passes along certain attribute requests to the underlying object (i.e., they are not considered to be requests that pertain to the named stream).

NVD Source

Technical Analysis

CVE-2019-9579 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 8.1.