CVE-2021-38692— Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard
Quick assessment
Affected
QNAP Systems Inc. QVR Elite
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Qnap Qvr是中国威联通科技（Qnap）公司的一个Qnap监控系统控制中心。 QVR 多款产品存在缓冲区错误漏洞，该漏洞源于一个堆栈缓冲区溢出漏洞会影响运行 QVR Elite、QVR Pro、QVR Guard 的 QNAP 设备。 如果被利用，此漏洞允许攻击者执行任意代码。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2021-38692
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard
Source: CVE Program / CVE List V5
Vulnerability Description
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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Qnap Qvr缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Qnap Qvr是中国威联通科技（Qnap）公司的一个Qnap监控系统控制中心。 QVR 多款产品存在缓冲区错误漏洞，该漏洞源于一个堆栈缓冲区溢出漏洞会影响运行 QVR Elite、QVR Pro、QVR Guard 的 QNAP 设备。 如果被利用，此漏洞允许攻击者执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| QNAP Systems Inc. | QVR Elite | unspecified ~ 2.1.4.0 (2021/12/06) | - |
|
| QNAP Systems Inc. | QVR Elite | unspecified ~ 2.1.4.0 (2021/12/06) | - |
|
| QNAP Systems Inc. | QVR Elite | unspecified ~ 2.1.4.0 (2021/12/06) | - |
|
| QNAP Systems Inc. | QVR Elite | unspecified ~ 2.1.4.0 (2021/12/06) | - |
|
| QNAP Systems Inc. | QVR Pro | unspecified ~ 2.1.3.0 (2021/12/06) | - |
|
| QNAP Systems Inc. | QVR Pro | unspecified ~ 2.1.3.0 (2021/12/06) | - |
|
| QNAP Systems Inc. | QVR Guard | unspecified ~ 2.1.3.0 (2021/12/06) | - |
|
| QNAP Systems Inc. | QVR Guard | unspecified ~ 2.1.3.0 (2021/12/06) | - |
|
II. Public POCs for CVE-2021-38692
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-38692
请登录查看更多情报信息。
Other References for CVE-2021-38692 (1)
-
https://www.qnap.com/en/security-advisory/qsa-21-59 x_refsource_MISC
Same Patch Batch · QNAP Systems Inc. · 2022-01-14 · 7 CVEs total
| CVE-2021-38682 | 8.1 HIGH | Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard |
| CVE-2021-38689 | 8.1 HIGH | Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard |
| CVE-2021-38690 | 8.1 HIGH | Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard |
| CVE-2021-38691 | 8.1 HIGH | Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard |
| CVE-2021-38678 | 6.1 MEDIUM | Open Redirect Vulnerability in QcalAgent |
| CVE-2021-38677 | 5.3 MEDIUM | Reflected XSS Vulnerability in QcalAgent |
IV. Related Vulnerabilities
Same product: QVR Elite
-
CVE-2021-38691
Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR G -
CVE-2021-38690
Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR G -
CVE-2021-38689
Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR G -
CVE-2021-38682
Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR G
Same weakness: CWE-120
-
CVE-2026-71942
DrayTek VigorSwitch Multiple Models Buffer Overflow via mail -
CVE-2026-71941
DrayTek VigorSwitch Multiple Models Buffer Overflow via diag -
CVE-2026-71940
DrayTek VigorSwitch Multiple Models Buffer Overflow via acl_ -
CVE-2026-71938
DrayTek VigorSwitch Multiple Models Buffer Overflow via swit -
CVE-2026-71939
DrayTek VigorSwitch Multiple Models Buffer Overflow via acl_
V. Comments for CVE-2021-38692
No comments yet