Cyber Resilience

CVE-2021-3310

High

Published: 10 March 2021

Published
10 March 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0114 78.8th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-3310 is a high-severity Link Following (CWE-59) vulnerability in Westerndigital My Cloud Os. Its CVSS base score is 7.8 (High).

Operationally, ranked in the top 21.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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).

CWE(s)
CWE-59

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

westerndigital
my cloud os
≤ 5.10.122

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References