CRITICAL

CVE-2018-9148

CVSS v3

9.8

CRITICAL

EPSS Score

3.6 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2018-9148 yet.

Full record on NVD

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.

Technical details

Published: 2018-03-30

Frequently asked questions

What is CVE-2018-9148?

Is CVE-2018-9148 actively exploited?

Active exploitation of CVE-2018-9148 has not been confirmed. Its EPSS score was 3.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

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

CVE-2018-9148 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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