Skip to content
Fencer Intel
critical 9.6

CVE-2021-28813 json

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

published 5y ago modified 4mo 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

Summary

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

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

Is CVE-2021-28813 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

1.10% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-09).

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

Sources

Fencer Intel 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.