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Vulnerability record · CVE-2020-12830 · published 27 October 2020

CVE-2020-12830: Westerndigital my cloud firmware out-of-bounds write vulnerability

Westerndigital · My Cloud Firmware

Addressed multiple stack buffer overflow vulnerabilities that could allow an attacker to carry out escalation of privileges through unauthorized remote code execution in Western Digital My Cloud devices before 5.04.114.

9.8 CVSS 3.1 Critical EPSS 3.3% · top 11.8% CWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 7.5
3.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Addressed multiple stack buffer overflow vulnerabilities that could allow an attacker to carry out escalation of privileges through unauthorized remote code execution in Western Digital My Cloud devices before 5.04.114.

CVSS:3.1/AV:N/AC:L/PR:N/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://support.wdc.com/downloads.aspx?g=907&lang=en Vendor Advisory
https://www.westerndigital.com/support/productsecurity/wdc-20007-my-cloud-firmware-version-5-04-114 Vendor Advisory
https://support.wdc.com/downloads.aspx?g=907&lang=en Vendor Advisory
https://www.westerndigital.com/support/productsecurity/wdc-20007-my-cloud-firmware-version-5-04-114 Vendor 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-2020-12830), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.