What is CVE-2026-22900?

CVE-2026-22900 is a critical-severity vulnerability in Qnap Qunetswitch, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-03-20.

How severe is CVE-2026-22900?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Qnap Qunetswitch

CVE-2026-22900

A use of hard-coded credentials vulnerability has been reported to affect QuNetSwitch. The remote attackers can then exploit the vulnerability to gain unauthorized access. We have already fixed the vulnerability in the following version: QuNetSwitch 2.0.5.0906 and later

EPSS: 0.003 (24.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Qnap Qunetswitch
Qnap Systems Inc. Qunetswitch — versions 2.0.x

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

security@qnapsecurity.com.tw (Vendor Advisory)

Frequently asked questions

What is CVE-2026-22900?: CVE-2026-22900 is a critical-severity vulnerability in Qnap Qunetswitch, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-03-20.
How severe is CVE-2026-22900?: Critical severity. CVSS v3 base score is 9.8 out of 10.