QTS, QuTS hero
Published Jan 2, 2026
6.9
MEDIUMCVSS 4.0
EPSS 0.47%
Description
A path traversal 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 read the contents of unexpected files or system data.
We have already fixed the vulnerability in the following versions: QTS 5.2.8.3332 build 20251128 and later QuTS hero h5.2.8.3321 build 20251117 and later QuTS hero h5.3.2.3354 build 20251225 and later
Affected products
-
- Version 5.2.0StatusaffectedConstraints<5.2.8.3332 build 20251128
- Version
-
- Version h5.2.0StatusaffectedConstraints<h5.2.8.3321 build 20251117
- Version h5.3.0StatusaffectedConstraints<h5.3.2.3354 build 20251225
- 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. | QTS | unaffected |
| |||||||||
| QNAP Systems Inc. | QuTS hero | unaffected |
|
Configuration 1
- 5.2.0.2737
- 5.2.0.2744
- 5.2.0.2782
- 5.2.0.2802
- 5.2.0.2823
- 5.2.0.2851
- 5.2.0.2860
- 5.2.1.2930
- 5.2.2.2950
- 5.2.3.3006
- 5.2.4.3070
- 5.2.4.3079
- 5.2.4.3092
- 5.2.5.3145
- 5.2.6.3195
- 5.2.6.3229
- 5.2.7.3256
- 5.2.7.3297
Configuration 2
- h5.2.0.2737
- h5.2.0.2782
- h5.2.0.2789
- h5.2.0.2802
- h5.2.0.2823
- h5.2.0.2851
- h5.2.0.2860
- h5.2.1.2929
- h5.2.1.2940
- h5.2.2.2952
- h5.2.3.3006
- h5.2.4.3070
- h5.2.4.3079
- h5.2.5.3138
- h5.2.6.3195
- h5.2.7.3256
- h5.2.7.3297
- h5.3.0.3115
- h5.3.0.3145
- h5.3.0.3192
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: QTS 5.2.8.3332 build 20251128 and later QuTS hero h5.2.8.3321 build 20251117 and later QuTS hero h5.3.2.3354 build 20251225 and later
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/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:N/A:N
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 Jan 5, 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
Jan–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 | 0.47% (0.00470) | 38.33th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.39% (0.00392) | 30.76th | v5 (v2026.06.15) |
| Jan 3, 2026 | 0.17% (0.00165) | 38.15th | v4 (v2025.03.14) |
References (1)
- https://www.qnap.com/en/security-advisory/qsa-25-51 Vendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.qnap.com/en/security-advisory/qsa-25-51 | Vendor Advisory |
Change history (0)
No recorded changes yet.