CVE-2021-38690: high-severity vulnerability in QNAP Systems Inc. QVR Elite
Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 1.3%
A stack buffer overflow vulnerability has been reported to affect QNAP device running QVR Elite, QVR Pro, QVR Guard. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of QVR Elite, QVR Pro, QVR Guard: QuTS hero h5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QuTS hero h4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 4.5.4: QVR Guard 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Guard 2.1.3.0 (2021/12/06) and later
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
QNAP Systems Inc. · QVR EliteQNAP Systems Inc. · QVR GuardQNAP Systems Inc. · QVR ProRelated CVEs — QNAP Systems Inc. QVR Elite
In the same product, most dangerous first.
CVE-2021-38692HIGHStack Overflow Vulnerability in QVR Elite, QVR Pro and QVR GuardEPSS 1.3%CVE-2021-38691HIGHStack Overflow Vulnerability in QVR Elite, QVR Pro and QVR GuardEPSS 1.3%CVE-2021-38689HIGHStack Overflow Vulnerability in QVR Elite, QVR Pro and QVR GuardEPSS 1.3%CVE-2021-38682HIGHStack Overflow Vulnerability in QVR Elite, QVR Pro and QVR GuardEPSS 1.3%CVE-2026-22898CRITICALQVR ProEPSS 0.7%