Improper authentication in QNAP QTS
Priority MEDIUM 48CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.
Summary
An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network. We have already fixed the vulnerability in the following versions: QTS 5.1.3.2578 build 20231110 and later QuTS hero h5.1.3.2578 build 20231110 and later QuTScloud c5.1.5.2651 and later
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00469 40th percentileScored 2026-11-07
Fix Fixed QTS (QNAP Systems Inc.): 5.1.3.2578 build 20231110QuTS hero (QNAP Systems Inc.): h5.1.3.2578 build 20231110+1 more product
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| QNAP | QTS | 5.1.x to before 5.1.3.2578 build 20231110 | 5.1.3.2578 build 20231110 | Patch available | CNA |
| QNAP | QuTS hero | h5.1.x to before h5.1.3.2578 build 20231110 | h5.1.3.2578 build 20231110 | Patch available | CNA |
| QNAP | QuTScloud | c5.x.x to before c5.1.5.2651 | c5.1.5.2651 | Patch available | CNA |
- QTS VendorQNAP Affected 5.1.x to before 5.1.3.2578 build 20231110 Fixed in 5.1.3.2578 build 20231110 Patch available CNA
- QuTS hero VendorQNAP Affected h5.1.x to before h5.1.3.2578 build 20231110 Fixed in h5.1.3.2578 build 20231110 Patch available CNA
- QuTScloud VendorQNAP Affected c5.x.x to before c5.1.5.2651 Fixed in c5.1.5.2651 Patch available CNA
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:qnap:qts:5.1.0.2348:build_20230325:*:*:*:*:*:* | 5.1.0.2348 build_20230325 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:qts:5.1.0.2399:build_20230515:*:*:*:*:*:* | 5.1.0.2399 build_20230515 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:qts:5.1.0.2418:build_20230603:*:*:*:*:*:* | 5.1.0.2418 build_20230603 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:qts:5.1.0.2444:build_20230629:*:*:*:*:*:* | 5.1.0.2444 build_20230629 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:qts:5.1.0.2466:build_20230721:*:*:*:*:*:* | 5.1.0.2466 build_20230721 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:qts:5.1.1.2491:build_20230815:*:*:*:*:*:* | 5.1.1.2491 build_20230815 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:qts:5.1.2.2533:build_20230926:*:*:*:*:*:* | 5.1.2.2533 build_20230926 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:qts:5.1.3.2578:-:*:*:*:*:*:* | 5.1.3.2578 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:quts_hero:h5.1.0.2409:build_20230525:*:*:*:*:*:* | h5.1.0.2409 build_20230525 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:quts_hero:h5.1.0.2424:build_20230609:*:*:*:*:*:* | h5.1.0.2424 build_20230609 | Vulnerable | QNAP |
- cpe:2.3:o:qnap:qts:5.1.0.2348:build_20230325:*:*:*:*:*:* Versions 5.1.0.2348 build_20230325 Vulnerable ·QNAP
- cpe:2.3:o:qnap:qts:5.1.0.2399:build_20230515:*:*:*:*:*:* Versions 5.1.0.2399 build_20230515 Vulnerable ·QNAP
- cpe:2.3:o:qnap:qts:5.1.0.2418:build_20230603:*:*:*:*:*:* Versions 5.1.0.2418 build_20230603 Vulnerable ·QNAP
- cpe:2.3:o:qnap:qts:5.1.0.2444:build_20230629:*:*:*:*:*:* Versions 5.1.0.2444 build_20230629 Vulnerable ·QNAP
- cpe:2.3:o:qnap:qts:5.1.0.2466:build_20230721:*:*:*:*:*:* Versions 5.1.0.2466 build_20230721 Vulnerable ·QNAP
- cpe:2.3:o:qnap:qts:5.1.1.2491:build_20230815:*:*:*:*:*:* Versions 5.1.1.2491 build_20230815 Vulnerable ·QNAP
- cpe:2.3:o:qnap:qts:5.1.2.2533:build_20230926:*:*:*:*:*:* Versions 5.1.2.2533 build_20230926 Vulnerable ·QNAP
- cpe:2.3:o:qnap:qts:5.1.3.2578:-:*:*:*:*:*:* Versions 5.1.3.2578 Vulnerable ·QNAP
- cpe:2.3:o:qnap:quts_hero:h5.1.0.2409:build_20230525:*:*:*:*:*:* Versions h5.1.0.2409 build_20230525 Vulnerable ·QNAP
- cpe:2.3:o:qnap:quts_hero:h5.1.0.2424:build_20230609:*:*:*:*:*:* Versions h5.1.0.2424 build_20230609 Vulnerable ·QNAP
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:qnap:quts_hero:h5.1.0.2453:build_20230708:*:*:*:*:*:* | h5.1.0.2453 build_20230708 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:quts_hero:h5.1.0.2466:build_20230721:*:*:*:*:*:* | h5.1.0.2466 build_20230721 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:quts_hero:h5.1.1.2488:build_20230812:*:*:*:*:*:* | h5.1.1.2488 build_20230812 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:quts_hero:h5.1.2.2534:build_20230927:*:*:*:*:*:* | h5.1.2.2534 build_20230927 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:quts_hero:h5.1.3.2578:-:*:*:*:*:*:* | h5.1.3.2578 | Vulnerable | QNAP |
| cpe:2.3:o:qnap:qutscloud:c5.1.0.2498:build_20230822:*:*:*:*:*:* | c5.1.0.2498 build_20230822 | Vulnerable | QNAP |
- cpe:2.3:o:qnap:quts_hero:h5.1.0.2453:build_20230708:*:*:*:*:*:* Versions h5.1.0.2453 build_20230708 Vulnerable ·QNAP
- cpe:2.3:o:qnap:quts_hero:h5.1.0.2466:build_20230721:*:*:*:*:*:* Versions h5.1.0.2466 build_20230721 Vulnerable ·QNAP
- cpe:2.3:o:qnap:quts_hero:h5.1.1.2488:build_20230812:*:*:*:*:*:* Versions h5.1.1.2488 build_20230812 Vulnerable ·QNAP
- cpe:2.3:o:qnap:quts_hero:h5.1.2.2534:build_20230927:*:*:*:*:*:* Versions h5.1.2.2534 build_20230927 Vulnerable ·QNAP
- cpe:2.3:o:qnap:quts_hero:h5.1.3.2578:-:*:*:*:*:*:* Versions h5.1.3.2578 Vulnerable ·QNAP
- cpe:2.3:o:qnap:qutscloud:c5.1.0.2498:build_20230822:*:*:*:*:*:* Versions c5.1.0.2498 build_20230822 Vulnerable ·QNAP
Remediation
- Fix · CNA QTS (QNAP Systems Inc.) Fixed in 5.1.3.2578 build 20231110
- Fix · CNA QuTS hero (QNAP Systems Inc.) Fixed in h5.1.3.2578 build 20231110
- Fix · CNA QuTScloud (QNAP Systems Inc.) Fixed in c5.1.5.2651
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
QNAP Systems QuTScloud c5.1.5.2651
26 records Highest priority Priority MEDIUM 5 MEDIUM, 21 LOW
Other records, highest priority first
- TI-2023-24080 Path traversal in QNAP QTSPriority MEDIUM 58
- TI-2023-24079 Command injection in QNAP QTSPriority MEDIUM 45
- TI-2023-20441 OS command injection in QNAP QTSPriority MEDIUM 43
- Release ·
QNAP Systems QTS, QuTS hero 5.1.3.2578 build 20231110, h5.1.3.2578 build 20231110
4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2023-24085 Buffer overflow in QNAP QTSPriority LOW 34
- TI-2023-24084 Buffer overflow in QNAP QTSPriority LOW 34
- TI-2023-20446 OS command injection in QNAP QTSPriority LOW 34
Timeline
- 2026-10-02 Threatist record created from CVE-2023-39303
- 2026-10-03 Alias added: GHSA-pg7w-g93j-pc6j
References
More QNAP Qts vulnerabilities
- TI-2020-02221 Command Injection Vulnerability in QTS and QuTS hero KEVCVSS 3.1CRITICAL 9.8
- TI-2019-05101 Improper input validation in QNAP NAS devices KEVCVSS 3.1CRITICAL 9.8
- TI-2018-14137 Improper input validation in QNAP QTS KEVCVSS 3.1CRITICAL 9.8
- TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
- TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
- TI-2018-14131 Cross-site scripting in QNAP QTS KEVCVSS 3.1HIGH 8.0
Sources
- CVE-2023-39303 · CVE Program
- CVE-2023-39303 · NVD
- FIRST EPSS
- GHSA-pg7w-g93j-pc6j · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences