QSAN Storage Manager - UNIX Symbolic Link (Symlink) Following via FileviewDoc function

published 2021-07-07 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19355

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

qsan storage_manager 3.3.3

Exploit prediction

1.30% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

QSAN Storage Manager

Classification

Weakness

CWE-61 UNIX Symbolic Link (Symlink) Following
CWE-59 Improper Link Resolution Before File Access

References

twcert.org.tw /tw/cp-132-4865-0c967-1.html
third-party-advisory

Sources

CVE List CVE-2021-32509
NVD CVE-2021-32509

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary