CVE-2021-32509: QSAN Storage Manager - UNIX Symbolic Link (Symlink) Following via FileviewDoc function

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-07 · updated 2026-06-17
Weakness: CWE-61

Description

Absolute Path Traversal vulnerability in FileviewDoc in QSAN Storage Manager allows remote authenticated attackers access arbitrary files by injecting the Symbolic Link following the Url path parameter. The referred vulnerability has been solved with the updated version of QSAN Storage Manager v3.3.3.

Affected products

QSAN Storage Manager: before 3.3.3 — fixed in 3.3.3

How to fix

Upgrade to a fixed version: QSAN Storage Manager 3.3.3. Check the vendor advisory for mitigations.

References

https://www.twcert.org.tw/tw/cp-132-4865-0c967-1.html
https://www.twcert.org.tw/tw/cp-132-4865-0c967-1.html

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