Out-of-Bounds Read Vulnerability in QSS
Priority LOW 34CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.
Summary
An out-of-bounds read vulnerability has been reported to affect certain QNAP switches running QSS. If exploited, this vulnerability allows attackers to read sensitive information on the system. This issue affects: QNAP Systems Inc. QSS versions prior to 1.0.2 build 20210122 on QSW-M2108-2C; versions prior to 1.0.2 build 20210122 on QSW-M2108-2S; versions prior to 1.0.2 build 20210122 on QSW-M2108R-2C.
Why it matters now
EPSS 0.00749 55th percentileScored 2026-11-07
Fix Fixed QSS (QNAP Systems Inc.): 1.0.2 build 20210122
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| QNAP | QSS | before 1.0.2 build 20210122 | 1.0.2 build 20210122 | Patch available | CNA |
| QNAP | QSS | before 1.0.2 build 20210122 | 1.0.2 build 20210122 | Patch available | CNA |
| QNAP | QSS | before 1.0.2 build 20210122 | 1.0.2 build 20210122 | Patch available | CNA |
- QSS VendorQNAP Affected before 1.0.2 build 20210122 Fixed in 1.0.2 build 20210122 Patch available CNA
- QSS VendorQNAP Affected before 1.0.2 build 20210122 Fixed in 1.0.2 build 20210122 Patch available CNA
- QSS VendorQNAP Affected before 1.0.2 build 20210122 Fixed in 1.0.2 build 20210122 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:qnap:qss:*:*:*:*:*:*:*:* | before 1.0.2 | Vulnerable | QNAP |
| cpe:2.3:h:qnap:qsw-m2108-2c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | QNAP |
| cpe:2.3:h:qnap:qsw-m2108-2s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | QNAP |
| cpe:2.3:h:qnap:qsw-m2108r-2c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | QNAP |
- cpe:2.3:a:qnap:qss:*:*:*:*:*:*:*:* Versions before 1.0.2 Vulnerable ·QNAP
- cpe:2.3:h:qnap:qsw-m2108-2c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·QNAP
- cpe:2.3:h:qnap:qsw-m2108-2s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·QNAP
- cpe:2.3:h:qnap:qsw-m2108r-2c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·QNAP
Remediation
- Fix · CNA QSS (QNAP Systems Inc.) Fixed in 1.0.2 build 20210122
- Fix · CNA QSS (QNAP Systems Inc.) Fixed in 1.0.2 build 20210122
- Fix · CNA QSS (QNAP Systems Inc.) Fixed in 1.0.2 build 20210122
Timeline
- 2026-10-02 Threatist record created from CVE-2021-28801
- 2026-10-03 Alias added: GHSA-f65j-5m47-6qgq
References
More QNAP Qss vulnerabilities
- TI-2021-09797 Inclusion of Sensitive Information in QSS CVSS 3.1HIGH 7.8
Sources
- CVE-2021-28801 · CVE Program
- CVE-2021-28801 · NVD
- FIRST EPSS
- GHSA-f65j-5m47-6qgq · 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