Vulnerability · Published Jun 3, 2021 · Assigned by qnap

CVE-2021-28806DOM-Based XSS Vulnerability in QTS and QuTS hero

Medium 5.7

In plain English

A medium-severity cross-site scripting in QTS from QNAP Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.1)5.7Medium

Exploit odds (30 days)0.5%top 56.7% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
QNAP Systems Inc.	QTS	unspecified – before 4.5.3.1652 Build 20210428
QNAP Systems Inc.	QuTS hero	unspecified – before h4.5.2.1638 Build 20210414
QNAP Systems Inc.	QuTScloud	unspecified – before c4.5.5.1656 Build 20210503

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

References

https://www.qnap.com/zh-tw/security-advisory/qsa-21-22 x_refsource_MISC