Review reviewHigh

CVE-2026-22893

QNAP Systems Inc. QTS, QuTS hero, qts

A command injection vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to execute arbitrary commands. We have already fixed the vulnerability in the following versions: QTS 5.2.9.3410 build 20260214 and later QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3459 build 20260409 and later

CVSS: 8.6
EPSS: 1.09%
CISA KEV: Not listed
Published: 2026.06.10

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability1.09%

Technical severityCVSS 8.6

Vulnerability overview

Affected product and versions

Product: QNAP Systems Inc. QTS, QuTS hero, qts
Affected versions: >= 5.2.0 < 5.2.9.3410 build 20260214, >= h5.2.0 < h5.2.9.3410 build 20260214, >= h5.3.0 < h5.3.4.3500 build 20260520, >= ? < h6.0.0.3459 build 20260409, >= 5.2.0.2737 < 5.2.9.3410, >= h5.2.0.2737 < h5.2.9.3410, >= h5.3.0.3115 < h5.3.4.3500, >= h6.0.0.3324 < h6.0.0.3459
Fixed versions: 5.2.9.3410, h5.2.9.3410, h5.3.4.3500, h6.0.0.3459

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that QNAP Systems Inc. QTS, QuTS hero, qts and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE: CWE-78