5.7
MEDIUM
CVE-2021-28806
QNAP QTS and QuTS Hero DOM Based Cross Site Scripting
Description

A DOM-based XSS vulnerability has been reported to affect QNAP NAS running QTS and QuTS hero. If exploited, this vulnerability allows attackers to inject malicious code. This issue affects: QNAP Systems Inc. QTS versions prior to 4.5.3.1652 Build 20210428. QNAP Systems Inc. QuTS hero versions prior to h4.5.2.1638 Build 20210414. QNAP Systems Inc. QuTScloud versions prior to c4.5.5.1656 Build 20210503. This issue does not affect: QNAP Systems Inc. QTS 4.3.6; 4.3.3.

INFO

Published Date :

June 3, 2021, 3:15 a.m.

Last Modified :

June 9, 2021, 7:56 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.1
Affected Products

The following products are affected by CVE-2021-28806 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Qnap quts_hero
2 Qnap qts
3 Qnap qutscloud
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-28806.

URL Resource
https://www.qnap.com/zh-tw/security-advisory/qsa-21-22 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-28806 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-28806 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Jun. 09, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    Changed Reference Type https://www.qnap.com/zh-tw/security-advisory/qsa-21-22 No Types Assigned https://www.qnap.com/zh-tw/security-advisory/qsa-21-22 Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:* versions up to (excluding) 4.5.3.1652
    Added CPE Configuration OR *cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:* versions up to (excluding) h4.5.2.1638
    Added CPE Configuration OR *cpe:2.3:o:qnap:qutscloud:*:*:*:*:*:*:*:* versions up to (excluding) c4.5.5.1656
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-28806 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-28806 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.05 }} 0.00%

score

0.18514

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability