6.1

CVE-2021-44053: qnap systems inc. qts Cross-site Scripting

CVSS: 6.1v3.1MediumModified
Published 05-05-2022Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2021-44053 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in qnap systems inc. qts. EPSS estimates a 0.76% chance of exploitation in the next 30 days, higher than 54.4% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
0.76%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 05-05-2022
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QTS, QuTS hero and QuTScloud. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of QTS, QuTS hero and QuTScloud: QTS 4.5.4.1991 build 20220329 and later QTS 5.0.0.1986 build 20220324 and later QuTS hero h5.0.0.1986 build 20220324 and later QuTS hero h4.5.4.1971 build 20220310 and later QuTScloud c5.0.1.1949 and later

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.76%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

+0.01 pp

From 0.74% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.76%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Qnap3 products
  • qts≥ 5.0.0.1716, < 5.0.0.1986 | ≥ 4.3.3.0174, < 4.3.3.1945 | ≥ 4.3.4.0899, < 4.3.4.1976 | ≥ 4.3.6.0895, < 4.3.6.1965 | ≥ 4.4.0.0883, < 4.5.4.1991 | 4.2.6:build_20170517 | 4.2.6:build_20190322 | 4.2.6:build_20190730 | 4.2.6:build_20190921 | 4.2.6:build_20191107 | 4.2.6:build_20200109 | 4.2.6:build_20200421 | 4.2.6:build_20200611 | 4.2.6:build_20200821 | 4.2.6:build_20210327 | 4.2.6:build_20211215
  • quts_hero< h4.5.4.1771 | ≥ h5.0.0.1772, < h5.0.0.1986
  • qutscloud< c5.0.1.1998
Qnap systems inc.3 products
  • qts≥ unspecified, < 4.5.4.1991 build 20220329 | ≥ unspecified, < 5.0.0.1986 build 20220324
  • quts hero≥ unspecified, < h5.0.0.1986 build 20220324 | ≥ unspecified, < h4.5.4.1971 build 20220310
  • qutscloud≥ unspecified, < c5.0.1.1949

2 vendors · 6 products

References

1 links