CVE-2021-28801

Out-of-Bounds Read Vulnerability in QSS

Description

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.

Remediation

Solution:

  • QNAP have already fixed this vulnerability in the following versions: QSW-M2108-2C: QSS 1.0.2 build 20210122 and later QSW-M2108-2S: QSS 1.0.2 build 20210122 and later QSW-M2108R-2C: QSS 1.0.2 build 20210122 and later

Category

3.1
CVSS
Severity: Low
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.28%
Vendor Advisory qnap.com
Affected: QNAP Systems Inc. QSS
Affected: QNAP Systems Inc. QSS
Affected: QNAP Systems Inc. QSS
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2021-28801?
CVE-2021-28801 has been scored as a low severity vulnerability.
How to fix CVE-2021-28801?
To fix CVE-2021-28801: QNAP have already fixed this vulnerability in the following versions: QSW-M2108-2C: QSS 1.0.2 build 20210122 and later QSW-M2108-2S: QSS 1.0.2 build 20210122 and later QSW-M2108R-2C: QSS 1.0.2 build 20210122 and later
Is CVE-2021-28801 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-28801 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-28801?
CVE-2021-28801 affects QNAP Systems Inc. QSS, QNAP Systems Inc. QSS, QNAP Systems Inc. QSS.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.