Is CVE-2018-9148 actively exploited?

No active exploitation of CVE-2018-9148 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-9148 be exploited remotely?

Yes. CVE-2018-9148 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-9148?

CVE-2018-9148 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2018-9148

CRITICAL

CVE-2018-9148

CWE-287Published: March 30, 2018· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Western Digital WD My Cloud v04.05.00-320 devices embed the session token (aka PHPSESSID) in filenames, which makes it easier for attackers to bypass authentication by listing a directory. NOTE: this can be exploited in conjunction with CVE-2018-7171 for remote authentication bypass within a product that uses My Cloud.

NVD Source

Technical Analysis

CVE-2018-9148 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.