Buffer overflow in Qnap Qts

CVE-2021-28816

A stack buffer overflow vulnerability has been reported to affect QNAP device running QTS, QuTScloud, QuTS hero. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of QTS, QuTScloud, QuTS hero: QTS 4.5.4.1715 build 20210630 and later QTS 5.0.0.1716 build 20210701 and later QTS 4.3.3.1693 build 20210624 and later QTS 4.3.6.1750 build 20210730 and later QuTScloud c4.5.6.1755 and later QuTS hero h4.5.4.1771 build 20210825 and later

Vulnerability class: Buffer Overflow

EPSS: 0.009 (56.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-28816?
CVE-2021-28816 is a high-severity vulnerability in Qnap Qts, classified under Out-of-bounds Write. CVSS score: 7.6/10. Published 2021-09-10.
How severe is CVE-2021-28816?
High severity. CVSS v3 base score is 7.6 out of 10.