Path Traversal in Qnap Qts
CVE-2021-28798
A relative path traversal vulnerability has been reported to affect QNAP NAS running QTS and QuTS hero. If exploited, this vulnerability allows attackers to modify files that impact system integrity. QNAP have already fixed this vulnerability in the following versions: QTS 4.5.2.1630 Build 20210406 and later QTS 4.3.6.1663 Build 20210504 and later QTS 4.3.3.1624 Build 20210416 and later QuTS hero h4.5.2.1638 Build 20210414 and later QNAP NAS running QTS 4.5.3 are not affected.
EPSS: 0.009 (57.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Qnap Qts
- Qnap Quts_hero
- Qnap Systems Inc. Qts — versions unspecified, 4.5.3
- Qnap Systems Inc. Quts Hero — versions unspecified
Weakness classification (CWE)
References
- security@qnapsecurity.com.tw (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-28798?
- CVE-2021-28798 is a high-severity vulnerability in Qnap Qts, classified under Relative Path Traversal. CVSS score: 8.8/10. Published 2021-05-21.
- How severe is CVE-2021-28798?
- High severity. CVSS v3 base score is 8.8 out of 10.