CVE-2021-28805 - CVE House
Back to Database
Status published High CVE-2021-28805

Inclusion of Sensitive Information in QSS

Vulnerability Description

Inclusion of sensitive information in the source code has been reported to affect certain QNAP switches running QSS. If exploited, this vulnerability allows attackers to read application data. This issue affects: QNAP Systems Inc. QSS versions prior to 1.0.3 build 20210505 on QSW-M2108-2C; versions prior to 1.0.3 build 20210505 on QSW-M2108-2S; versions prior to 1.0.3 build 20210505 on QSW-M2108R-2C; versions prior to 1.0.12 build 20210506 on QSW-M408.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-28805

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Jan Hoff

References

More from QNAP Systems Inc.

View All →
CVE-2025-9110
QTS, QuTS hero
Low 2.7
CVE-2025-68406
Qsync Central
Low 1.3
CVE-2025-66281
QTS, QuTS hero
Medium 6.9
CVE-2025-66280
QTS, QuTS hero
Medium 5.1
CVE-2025-66279
QTS, QuTS hero
High 8.6

Affected Vendor

QNAP Systems Inc.

View all reports →

Affected Software

QSS
Vulnerable Versions:
unspecified

Timeline

Official Publish: June 11th, 2021
Last Modified: September 17th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-540

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.