QTS, QuTS hero
Published Jan 2, 2026
1.2
LOWCVSS 4.0
EPSS 0.36%
Description
A buffer overflow 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 modify memory or crash processes.
We have already fixed the vulnerability in the following version: QTS 5.2.8.3332 build 20251128 and later
Affected products
-
- Version 5.2.xStatusaffectedConstraints<5.2.8.3332 build 20251128
- 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 |
|
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 version: QTS 5.2.8.3332 build 20251128 and later
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/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:N/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 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 | 0.36% (0.00362) | 27.61th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.30% (0.00304) | 21.88th | v5 (v2026.06.15) |
| Jan 3, 2026 | 0.12% (0.00123) | 32.42th | 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.