CVE-2021-28801

Out-of-Bounds Read Vulnerability in QSS

HIGH
7.5
CVSS Score
Published: June 11, 2021 at 06:35 AM UTC
Updated: June 17, 2026 at 03:46 AM UTC
4 products affected across 1 vendorQSSQsw-M2108-2SQsw-M2108R-2C

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Severity
HIGH7.5
Exploit prediction
EPSS 0.7%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.0.2v < 1.0.2 build 20210122
Affected range stops below 1.0.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.0.2 build 20210122, so it looks safe — our inference, not a vendor statement
qnap-qsw-m2108-2c (environment) · qnap-qsw-m2108-2s (environment) · qnap-qsw-m2108r-2c (environment)
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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