CVE-2021-3310

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

Western Digital My Cloud OS 5 devices before 5.10.122 mishandle Symbolic Link Following on SMB and AFP shares. This can lead to code execution and information disclosure (by reading local files).

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-59

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://www.westerndigital.com/support/productsecurity/wdc-21002-my-cloud-firmware-version-5-10-122Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-277/Third Party Advisory
https://www.westerndigital.com/support/productsecurity/wdc-21002-my-cloud-firmware-version-5-10-122Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-277/Third Party Advisory

Timeline

Published: Mar 10, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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