A buffer overflow vulnerability in external device function in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices
Published Dec 21, 2017
9.8
CRITICALCVSS 3.0
EPSS 3.29%
Description
A buffer overflow vulnerability in external device function in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.
Affected products
-
- Version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlierStatusaffectedConstraints-
- 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 | QTS External Device function | n/a |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.29% (0.03287) | 88.06th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.29% (0.03287) | 86.83th | v5 (v2026.06.15) |
| Nov 24, 2025 | 7.31% (0.07310) | 91.29th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.40% (0.03403) | 86.29th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.77% (0.06765) | 85.09th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.72% (0.02724) | 84.96th | v4 (v2025.03.14) |
| Dec 17, 2024 | 2.64% (0.02642) | 90.07th | v3 (v2023.03.01) |
| Dec 12, 2024 | 4.37% (0.04374) | 92.68th | v3 (v2023.03.01) |
| Jul 18, 2024 | 3.53% (0.03531) | 91.69th | v3 (v2023.03.01) |
| Jun 10, 2024 | 3.13% (0.03130) | 91.09th | v3 (v2023.03.01) |
| Mar 20, 2024 | 3.12% (0.03118) | 90.85th | v3 (v2023.03.01) |
| Jan 6, 2024 | 2.23% (0.02234) | 88.38th | v3 (v2023.03.01) |
| Oct 31, 2023 | 2.17% (0.02169) | 88.13th | v3 (v2023.03.01) |
| May 14, 2023 | 2.11% (0.02115) | 87.51th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.21% (0.02212) | 87.69th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02166) | 80.16th | v2 (v2022.01.01) |
| Sep 17, 2022 | 2.17% (0.02166) | 79.34th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.98% (0.01978) | 77.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.98% (0.01978) | 56.34th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.37% (0.01374) | 32.00th | v1 |
| Jan 6, 2022 | 1.37% (0.01374) | 31.26th | v1 |
| Sep 1, 2021 | 1.37% (0.01374) | 70.79th | v1 |
| Apr 14, 2021 | 1.37% (0.01374) | 0.00th | v1 |
References (2)
- http://www.securitytracker.com/id/1040018 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://www.qnap.com/zh-tw/security-advisory/nas-201712-15 x_refsource_CONFIRMIssue TrackingVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securitytracker.com/id/1040018 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://www.qnap.com/zh-tw/security-advisory/nas-201712-15 | x_refsource_CONFIRMIssue TrackingVendor Advisory |
Change history (0)
No recorded changes yet.