QuTS hero
Published Jun 10, 2026
5.1
MEDIUMCVSS 4.0
EPSS 0.33%
Description
A NULL pointer dereference 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 launch a denial-of-service (DoS) attack.
We have already fixed the vulnerability in the following versions: 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
Affected products
-
- Version ?StatusaffectedConstraints<h6.0.0.3459 build 20260409
- Version h5.2.0StatusaffectedConstraints<h5.2.9.3410 build 20260214
- Version h5.3.0StatusaffectedConstraints<h5.3.4.3500 build 20260520
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| QNAP Systems Inc. | QuTS hero | unaffected |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
We have already fixed the vulnerability in the following versions: 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
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/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
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jun 10, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Jun–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.33% (0.00331) | 23.92th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.29% (0.00294) | 20.89th | v5 (v2026.06.15) |
| Jun 10, 2026 | 0.14% (0.00140) | 33.95th | v4 (v2025.03.14) |
References (1)
| Link | Providers | Tags |
|---|---|---|
| https://www.qnap.com/en/security-advisory/qsa-26-38 | Broken Link |
Change history (0)
No recorded changes yet.