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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.009 (59.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- QNAP Qts
- QNAP Qutscloud
- QNAP Quts Hero
- QNAP Systems Inc. Qts — versions unspecified
- QNAP Systems Inc. Qutscloud — versions unspecified
- QNAP Systems Inc. Quts Hero — versions unspecified
Weakness classification (CWE)
References
- www.qnap.com/en/security-advisory/qsa-21-33 (Vendor Advisory)
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.