CVE-2021-28797 | BDVDB-2026-152151 Detail

QNAP SystemsSurveillance Station

Description#

A stack-based buffer overflow vulnerability has been reported to affect QNAP NAS devices running Surveillance Station. If exploited, this vulnerability allows attackers to execute arbitrary code. QNAP have already fixed this vulnerability in the following versions: Surveillance Station 5.1.5.4.3 (and later) for ARM CPU NAS (64bit OS) and x86 CPU NAS (64bit OS) Surveillance Station 5.1.5.3.3 (and later) for ARM CPU NAS (32bit OS) and x86 CPU NAS (32bit OS)

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-121 Stack-based Buffer Overflow

References#

https://www.qnap.com/en/security-advisory/qsa-21-07

Exploit#

No public exploit known

History#

Version 12021-04-14Record published in the CVE List.
Version 22024-09-17Most recent update recorded in the CVE List.

Published

Published: 2021-04-14
Last modified: 2024-09-17

Vendor information

Vendor: QNAP Systems
Product: Surveillance Station

All QNAP Systems vulnerabilities

Score

9.8 Critical

EPSS

5.9%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 93.3.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 5.1.5.4.3
Fixed
5.1.5.4.3
Vulnerable
< 5.1.5.3.3
Fixed
5.1.5.3.3

Scoring System

CVSS v4.0

Not available

CVSS v3.1

9.8 Critical

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).