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CVE-2026-22898

QVR Pro

A missing authentication for critical function vulnerability has been reported to affect QVR Pro. The remote attackers can then exploit the vulnerability to gain access to the system. We have already fixed the vulnerability in the following version: QVR Pro 2.7.4.14 and later

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Vendors
Qnap Qnap Systems
Products
Qvr Pro Qvr Pro
CVE-2025-52856

VioStor

An improper authentication vulnerability has been reported to affect VioStor. If a remote attacker, they can then exploit the vulnerability to compromise the security of the system. We have already fixed the vulnerability in the following version: VioStor 5.1.6 build 20250621 and later

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Vendors
Qnap
Products
Qvr
CVE-2023-47565

Legacy VioStor NVR

An OS command injection vulnerability has been found to affect legacy QNAP VioStor NVR models running QVR Firmware 4.x. If exploited, the vulnerability could allow authenticated users to execute commands via a network. We have already fixed the vulnerability in the following versions: QVR Firmware 5.0.0 and later

CVSS 3.1 · 8 High EPSS 73.3% KEV · Listed
Vendors
Qnap
Products
Qvr Firmware
CVE-2022-27597

QTS, QuTS hero, QuTScloud, QVP (QVR Pro appliances)

A vulnerability has been reported to affect QNAP operating systems. If exploited, the out-of-bounds read vulnerability allows remote authenticated administrators to get secret values. The vulnerability affects the following QNAP operating systems: QTS, QuTS hero, QuTScloud, QVP (QVR Pro appliances) We have already fixed the vulnerability in the following versions: QTS 5.0.1.2346 build 20230322 and later QuTS hero h5.0.1.2348 build 20230324 and later

CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed
Vendors
Qnap
Products
Qts Quts Hero Qutscloud and 15 more
CVE-2023-23355

QTS, QuTS hero, QuTScloud, QVP (QVR Pro appliances), QVR

An OS command injection vulnerability has been reported to affect QNAP operating systems. If exploited, the vulnerability possibly allows remote authenticated administrators to execute commands via unspecified vectors. QES is not affected. We have already fixed the vulnerability in the following versions: QTS 5.0.1.2346 build 20230322 and later QTS 4.5.4.2374 build 20230416 and later QuTS hero h5.0.1.2348 build 20230324 and later QuTS hero h4.5.4.2374 build 20230417 and later QuTScloud c5.0.1.2374 and later

CVSS 3.1 · 6.6 Medium EPSS 1.2% KEV · Not listed
Vendors
Qnap
Products
Qts Quts Hero Qutscloud and 15 more
CVE-2022-27599

QVR Pro Client

An insertion of sensitive information into Log file vulnerability has been reported to affect product. If exploited, the vulnerability possibly provides local authenticated administrators with an additional, less-protected path to acquiring the information via unspecified vectors. We have already fixed the vulnerability in the following version: Windows 10 SP1, Windows 11, Mac OS, and Mac M1: QVR Pro Client 2.3.0.0420 and later

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
Vendors
Qnap
Products
Qvr Pro Client
CVE-2022-27588

Vulnerability in QVR

We have already fixed this vulnerability in the following versions of QVR: QVR 5.1.6 build 20220401 and later

CVSS 3.1 · 9.8 Critical EPSS 1.4% KEV · Not listed
Vendors
Qnap
Products
Qvr
CVE-2021-38692

Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard

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 · 8.1 High EPSS 1.3% KEV · Not listed
Vendors
Qnap
Products
Qvr Elite Qvr Guard Qvr Pro
CVE-2021-38691

Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard

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 · 8.1 High EPSS 1.3% KEV · Not listed
Vendors
Qnap
Products
Qvr Elite Qvr Guard Qvr Pro
CVE-2021-38690

Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard

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 · 8.1 High EPSS 1.3% KEV · Not listed
Vendors
Qnap
Products
Qvr Elite Qvr Guard Qvr Pro
CVE-2021-38689

Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard

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 · 8.1 High EPSS 1.3% KEV · Not listed
Vendors
Qnap
Products
Qvr Elite Qvr Guard Qvr Pro
CVE-2021-38686

Improper Authentication Vulnerability in VioStor

An improper authentication vulnerability has been reported to affect QNAP device, VioStor. If exploited, this vulnerability allows attackers to compromise the security of the system. We have already fixed this vulnerability in the following versions of QVR: QVR FW 5.1.6 build 20211109 and later

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Qnap
Products
Qvr
CVE-2021-38685

Command Injection Vulnerability in VioStor

A command injection vulnerability has been reported to affect QNAP device, VioStor. If exploited, this vulnerability allows remote attackers to run arbitrary commands. We have already fixed this vulnerability in the following versions of QVR: QVR FW 5.1.6 build 20211109 and later

CVSS 3.1 · 9.8 Critical EPSS 1.5% KEV · Not listed
Vendors
Qnap
Products
Qvr
CVE-2021-38682

Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard

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 and later QTS 5.0.0: QVR Guard 2.1.3.0 and later

CVSS 3.1 · 8.1 High EPSS 1.3% KEV · Not listed
Vendors
Qnap
Products
Qvr Elite Qvr Guard Qvr Pro
CVE-2021-34352

Command Injection Vulnerability in QVR

A command injection vulnerability has been reported to affect QNAP device running QVR. If exploited, this vulnerability could allow remote attackers to run arbitrary commands. We have already fixed this vulnerability in the following versions of QVR: QVR 5.1.5 build 20210902 and later

CVSS 3.1 · 7.2 High EPSS 1.5% KEV · Not listed
Vendors
Qnap
Products
Qvr
CVE-2021-34351

Command Injection Vulnerability in QVR

A command injection vulnerability has been reported to affect QNAP device running QVR. If exploited, this vulnerability could allow remote attackers to run arbitrary commands. We have already fixed this vulnerability in the following versions of QVR: QVR 5.1.5 build 20210803 and later

CVSS 3.1 · 9.8 Critical EPSS 1.5% KEV · Not listed
Vendors
Qnap
Products
Qvr
CVE-2021-34349

Command Injection Vulnerability in QVR

A command injection vulnerability has been reported to affect QNAP device running QVR. If exploited, this vulnerability could allow remote attackers to run arbitrary commands. We have already fixed this vulnerability in the following versions of QVR: QVR 5.1.5 build 20210803 and later

CVSS 3.1 · 7.2 High EPSS 1.5% KEV · Not listed
Vendors
Qnap
Products
Qvr
CVE-2021-34348

Command Injection Vulnerability in QVR

A command injection vulnerability has been reported to affect QNAP device running QVR. If exploited, this vulnerability could allow remote attackers to run arbitrary commands. We have already fixed this vulnerability in the following versions of QVR: QVR 5.1.5 build 20210803 and later

CVSS 3.1 · 9.8 Critical EPSS 1.5% KEV · Not listed
Vendors
Qnap
Products
Qvr
CVE-2022-27592

QVR Smart Client

An unquoted search path or element vulnerability has been reported to affect QVR Smart Client. If exploited, the vulnerability could allow local authenticated administrators to execute unauthorized code or commands via unspecified vectors. We have already fixed the vulnerability in the following version: Windows 10 SP1, Windows 11, Mac OS, and Mac M1: QVR Smart Client 2.4.0.0570 and later

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
Vendors
Qnap
Products
Qvr Smart Client