Insufficiently Protected Credentials Vulnerability in QSW-M2116P-2T2S and QuNetSwitch

published 2021-09-10 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-15469

cvss: 9.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits: 0; none known

A vulnerability involving insecure storage of sensitive information has been reported to affect QSW-M2116P-2T2S and QNAP switches running QuNetSwitch. If exploited, this vulnerability allows remote attackers to read sensitive information by accessing the unrestricted storage mechanism.We have already fixed this vulnerability in the following versions: QSW-M2116P-2T2S 1.0.6 build 210713 and later QGD-1600P: QuNetSwitch 1.0.6.1509 and later QGD-1602P: QuNetSwitch 1.0.6.1509 and later QGD-3014PT: QuNetSwitch 1.0.6.1519 and later

Patch / fix

fixed in 2

QNAP Systems Inc. QSW-M2116P-2T2S 1.0.6 build 210713
QNAP Systems Inc. QuNetSwitch 1.0.6.1509, 1.0.6.1519

Exploit prediction

1.09% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.6	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

QNAP Systems Inc. QSW-M2116P-2T2S
QNAP Systems Inc. QuNetSwitch

Classification

Weakness

CWE-259 Use of Hard-coded Password
CWE-798 Use of Hard-coded Credentials
CWE-522 Insufficiently Protected Credentials
CWE-922 Insecure Storage of Sensitive Information

References

qnap.com /en/security-advisory/qsa-21-37
vendor-advisory

Sources

CVE List CVE-2021-28813
NVD CVE-2021-28813

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