9.8 - CVE-2021-28809

Executive Summary

Informations
Name	CVE-2021-28809	First vendor Publication	2021-07-08
Vendor	Cve	Last vendor Modification	2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score	9.8
Base Score	9.8	Environmental Score	9.8
impact SubScore	5.9	Temporal Score	9.8
Exploitabality Sub Score	3.9

Attack Vector	Network	Attack Complexity	Low
Privileges Required	None	User Interaction	None
Scope	Unchanged	Confidentiality Impact	High
Integrity Impact	High	Availability Impact	High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score	10	Attack Range	Network
Cvss Impact Score	10	Attack Complexity	Low
Cvss Expoit Score	10	Authentication	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

An improper access control vulnerability has been reported to affect certain legacy versions of HBS 3. If exploited, this vulnerability allows attackers to compromise the security of the operating system.QNAP have already fixed this vulnerability in the following versions of HBS 3: QTS 4.3.6: HBS 3 v3.0.210507 and later QTS 4.3.4: HBS 3 v3.0.210506 and later QTS 4.3.3: HBS 3 v3.0.210506 and later

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28809

CPE : Common Platform Enumeration

Type	Description	Count
Application	Qnap Hybrid Backup Sync cpe:2.3:a:qnap:hybrid_backup_sync::::::::	1

Sources (Detail)

https://www.qnap.com/en/security-advisory/qsa-21-19
https://www.zerodayinitiative.com/advisories/ZDI-21-783/

Source	Url

Alert History

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Date	Informations
2024-11-28 13:55:12	Multiple Updates
2021-07-12 21:23:13	Multiple Updates
2021-07-09 00:22:49	Multiple Updates
2021-07-08 17:22:47	Multiple Updates
2021-07-08 13:22:49	First insertion