What is CVE-2021-3310?

CVE-2021-3310 is a high-severity vulnerability in Westerndigital My_cloud_dl2100, classified under Improper Link Resolution Before File Access. CVSS score: 7.8/10. Published 2021-03-10.

How severe is CVE-2021-3310?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2021-3310 known to be exploited?

13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Westerndigital My_cloud_dl2100

CVE-2021-3310

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).

EPSS: 0.010 (58.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

Public proof-of-concept exploits

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-3310?: CVE-2021-3310 is a high-severity vulnerability in Westerndigital My_cloud_dl2100, classified under Improper Link Resolution Before File Access. CVSS score: 7.8/10. Published 2021-03-10.
How severe is CVE-2021-3310?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2021-3310 known to be exploited?: 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.