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CVE-2021-3310 Details
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 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.westerndigital.com/support/productsecurity/wdc-21002-my-cloud-firmware-version-5-10-122 | CVE | Vendor Advisory |
| https://www.zerodayinitiative.com/advisories/ZDI-21-277/ | CVE | Third Party Advisory |
| https://www.westerndigital.com/support/productsecurity/wdc-21002-my-cloud-firmware-version-5-10-122 | [email protected] | Vendor Advisory |
| https://www.zerodayinitiative.com/advisories/ZDI-21-277/ | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-59 | Improper Link Resolution Before File Access ('Link Following') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| westerndigital my cloud os | < 5.10.122 |
CPE
Remediation
| |
| westerndigital my cloud dl2100 | All versions |
CPE
Remediation
| |
| westerndigital my cloud dl4100 | All versions |
CPE
Remediation
| |
| westerndigital my cloud ex2 ultra | All versions |
CPE
Remediation
| |
| westerndigital my cloud ex2100 | All versions |
CPE
Remediation
| |
| westerndigital my cloud ex4100 | All versions |
CPE
Remediation
| |
| westerndigital my cloud mirror gen 2 | All versions |
CPE
Remediation
| |
| westerndigital my cloud pr2100 | All versions |
CPE
Remediation
| |
| westerndigital my cloud pr4100 | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Mar 17, 2021 | Initial Analysis | [email protected] |
| Mar 11, 2021 | CVE Modified | [email protected] |