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Vulnerability record · CVE-2019-18931 · published 13 November 2019

CVE-2019-18931: Western digital my cloud ex2 ultra firmware classic buffer overflow vulnerability

Western Digital · My Cloud Ex2 Ultra Firmware

Western Digital My Cloud EX2 Ultra firmware 2.31.195 allows a Buffer Overflow with Extended Instruction Pointer (EIP) control via crafted GET/POST parameters.

8.8 CVSS 3.1 High EPSS 2.2% · top 18.2% CWE-120 · Classic buffer overflow
8.8CVSS 3.1 base score, v2 9.0
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Western Digital My Cloud EX2 Ultra firmware 2.31.195 allows a Buffer Overflow with Extended Instruction Pointer (EIP) control via crafted GET/POST parameters.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/DelspoN/CVE/blob/master/CVE-2019-18931/description.txt Third Party Advisory
https://github.com/DelspoN/CVE/tree/master/CVE-2019-18931 ExploitThird Party Advisory
https://github.com/DelspoN/CVE/blob/master/CVE-2019-18931/description.txt Third Party Advisory
https://github.com/DelspoN/CVE/tree/master/CVE-2019-18931 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-18931), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.