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Qnap Systems Inc

32 CVEs vendor

Monthly

CVE-2026-22893 Jun 10, 03:06 HIGH PATCH This Week

Authenticated command injection in QNAP QTS and QuTS hero NAS operating systems allows attackers with administrator credentials to execute arbitrary OS commands on the appliance. The flaw spans multiple QTS and QuTS hero release trains (5.2.x, 5.3.x, and 6.0.x) and has been patched by QNAP across all affected branches. No public exploit identified at time of analysis, and the vulnerability is not currently listed in CISA KEV, but the post-authentication code execution primitive is highly valuable for attackers who have already harvested admin credentials.

Command Injection Qnap Qts Quts Hero Qnap Systems Inc
NVD VulDB
CVSS 4.0
8.6
EPSS
0.5%
CVE-2026-44083 Jun 09, 06:20 HIGH PATCH This Week

Authorization bypass in QNAP QuMagie versions prior to 2.9.1 allows remote unauthenticated attackers to manipulate user-controlled keys (IDOR-class flaw) and gain unintended privileges on the photo management application. The QNAP-issued advisory QSA-26-35 confirms the issue and ships a fix in 2.9.1; no public exploit identified at time of analysis, and the flaw is not currently listed in CISA KEV.

Authentication Bypass Qumagie Qnap Systems Inc
NVD VulDB
CVSS 4.0
8.7
EPSS
0.1%
CVE-2026-22897 Mar 20, 16:21 HIGH PATCH This Week

Remote command execution in QuNetSwitch versions prior to 2.0.4.0415 allows unauthenticated attackers to execute arbitrary system commands over the network with no user interaction required. The vulnerability stems from improper input validation in command processing functions, enabling complete system compromise. No patch is currently available for affected versions.

Command Injection Qunetswitch Qnap Systems Inc
NVD VulDB
CVSS 4.0
8.1
EPSS
1.1%
CVE-2026-22898 Mar 20, 16:21 CRITICAL PATCH Act Now

QVR Pro contains a missing authentication vulnerability (CWE-306) that allows remote attackers to access critical functions without proper credential validation, potentially gaining unauthorized system access. All versions prior to QVR Pro 2.7.4.14 are affected. This authentication bypass vulnerability enables unauthenticated remote exploitation of a surveillance management platform, representing a direct threat to organizations relying on QVR Pro for video recording and system administration.

Authentication Bypass Qvr Pro Qnap Systems Inc
NVD VulDB
CVSS 4.0
9.3
EPSS
0.4%
CVE-2026-24724 Jun 10, 03:15 MEDIUM PATCH This Month

Authorization bypass in QNAP File Station 5 (versions 5.5.0 through 5.5.6.5243) allows a remote attacker with a valid low-privileged user account to circumvent intended access restrictions and reach files or operations they should not be able to access. The flaw was reported by QNAP itself with a CVSS 4.0 score of 8.6 reflecting high confidentiality and integrity impact, and there is no public exploit identified at time of analysis. Note that the vendor description text references 'File Station 6,' but the CPE, affected version list, and fix data all point to File Station 5, which appears to be a typo in the advisory.

Authentication Bypass File Station 5 Qnap Systems Inc
NVD VulDB
CVSS 4.0
6.2
EPSS
0.1%
CVE-2026-26239 Jun 10, 03:15 MEDIUM PATCH This Month

Stack-based buffer overflow in QNAP File Station 5 versions 5.5.0 through 5.5.6.5208 allows authenticated remote attackers to corrupt memory and crash processes on affected NAS deployments. CVSS 4.0 score of 8.7 reflects high impact across confidentiality, integrity, and availability, though exploitation requires valid user credentials (PR:L). No public exploit identified at time of analysis, and the CVE is not currently listed in CISA KEV.

Buffer Overflow Stack Overflow File Station 5 Qnap Systems Inc
NVD VulDB
CVSS 4.0
6.3
EPSS
0.1%
CVE-2026-26237 Jun 10, 03:15 MEDIUM PATCH This Month

Unauthorized data access and action execution in QNAP QuMagie versions prior to 2.9.0 allows remote attackers to bypass authorization checks and interact with resources they should not be permitted to reach. The flaw is classified as a missing authorization issue (CWE-862) and carries a CVSS 4.0 score of 8.7 due to its network-reachable, low-complexity nature with no privileges or user interaction required. No public exploit identified at time of analysis, but QNAP NAS appliances are historically high-value targets for opportunistic attackers.

Authentication Bypass Qumagie Qnap Systems Inc
NVD VulDB
CVSS 4.0
6.6
EPSS
0.1%
CVE-2026-24719 Jun 10, 03:14 MEDIUM PATCH This Month

Authenticated command injection in QNAP QTS and QuTS hero NAS operating systems allows an attacker who already holds an administrator account to execute arbitrary OS commands on the appliance. The flaw carries a CVSS 4.0 score of 8.6, but the PR:H requirement substantially narrows the attacker population; no public exploit identified at time of analysis and the issue is not listed in CISA KEV. QNAP has shipped fixed builds (QTS 5.2.9.3492 build 20260507 and QuTS hero h5.2.9.3499 build 20260514).

Command Injection Qnap Qts Quts Hero Qnap Systems Inc
NVD VulDB
CVSS 4.0
6.1
EPSS
0.5%
CVE-2026-24717 Jun 10, 03:14 LOW PATCH Monitor

Path traversal in QNAP QTS and QuTS hero NAS operating systems exposes arbitrary file contents to attackers who have already obtained administrator-level access. The root cause (CWE-22) indicates insufficient sanitization of file path inputs, allowing directory escape to reach files outside intended scope. No public exploit code has been identified at time of analysis, and CISA KEV lists no active exploitation - making this a targeted post-compromise risk rather than an opportunistic mass-exploitation scenario. Vendor-released patches address all affected branches as of May 2026.

Path Traversal Qnap Qts Quts Hero Qnap Systems Inc
NVD VulDB
CVSS 4.0
1.2
EPSS
0.2%
CVE-2026-24716 Jun 10, 03:08 LOW PATCH Monitor

NULL pointer dereference in QNAP QTS and QuTS hero NAS operating systems enables a remote, administrator-authenticated attacker to trigger a denial-of-service condition. Exploitation requires the attacker to first hold or acquire an administrator account on the target device, after which a crafted request can crash system services. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog at time of analysis.

Denial Of Service Null Pointer Dereference Qnap Qts Quts Hero +1
NVD VulDB
CVSS 4.0
1.2
EPSS
0.1%
CVE-2026-24720 Jun 10, 03:08 LOW PATCH Monitor

Resource exhaustion in QNAP File Station 5 (versions 5.5.0 through 5.5.6.5242) allows a remote attacker holding a low-privilege user account to exhaust shared resources, denying availability to other users, processes, or applications on the same system. The vulnerability is classified as a Denial-of-Service risk with no impact on confidentiality or data integrity. No public exploit code or CISA KEV listing has been identified at time of analysis; QNAP has released a patched version and published a security advisory.

Denial Of Service File Station 5 Qnap Systems Inc
NVD VulDB
CVSS 4.0
1.3
EPSS
0.1%
CVE-2026-22899 Jun 10, 03:07 LOW PATCH Monitor

NULL pointer dereference in QNAP File Station 5 enables authenticated remote attackers to crash the service and cause a denial-of-service condition. Exploitation requires prior acquisition of a valid user account on the target QNAP NAS device, after which the attacker can trigger the dereference remotely over the network. No public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA KEV catalog.

Denial Of Service Null Pointer Dereference File Station 5 Qnap Systems Inc
NVD VulDB
CVSS 4.0
1.3
EPSS
0.2%
CVE-2025-66281 Jun 10, 03:06 MEDIUM PATCH This Month

NULL pointer dereference in QNAP QTS and QuTS hero NAS operating systems allows remote unauthenticated attackers to crash a network-facing service and cause a denial-of-service condition without any authentication or user interaction. Multiple active OS branches are affected - QTS 5.2.x and QuTS hero h5.2.x through h6.0.x - across a device population that is historically internet-exposed and frequently targeted. No public exploit has been identified and this vulnerability is not listed in CISA KEV, but the zero-authentication, network-accessible attack surface makes DoS attempts trivially repeatable against unpatched devices.

Denial Of Service Null Pointer Dereference Qnap Qts Quts Hero +1
NVD VulDB
CVSS 4.0
6.9
EPSS
0.2%
CVE-2025-66280 Jun 10, 03:05 MEDIUM PATCH This Month

Integer overflow (CWE-190) in QNAP QTS and QuTS hero NAS operating systems allows a remote attacker who has already obtained an administrator account to further compromise system integrity and availability. Affected versions span QTS 5.2.x and QuTS hero h5.2.x through h6.0.x; QNAP released patched builds in February and May 2026. No public exploit code and no CISA KEV listing have been identified at time of analysis, and the mandatory prerequisite of administrator-level access materially constrains real-world exploitability.

Buffer Overflow Qnap Integer Overflow Qts Quts Hero +1
NVD VulDB
CVSS 4.0
5.1
EPSS
0.1%
CVE-2025-66279 Jun 10, 03:05 HIGH PATCH This Week

Authenticated command injection in QNAP QTS and QuTS hero allows a remote attacker holding administrator credentials to execute arbitrary OS commands on the NAS appliance. The CVSS 4.0 base score of 8.6 reflects high impact across confidentiality, integrity, and availability, though exploitation requires high privileges (PR:H). No public exploit has been identified at time of analysis, and the issue is not listed in CISA KEV; QNAP has released fixed builds across affected QTS and QuTS hero branches.

Command Injection Qnap Qts Quts Hero Qnap Systems Inc
NVD VulDB
CVSS 4.0
8.6
EPSS
0.5%
CVE-2025-66273 Jun 10, 03:04 HIGH PATCH This Week

Authenticated command injection in QNAP QTS and QuTS hero NAS operating systems allows a remote attacker who has already obtained administrator credentials to execute arbitrary OS commands on the appliance. Reported by QNAP itself and tracked as EUVD-2025-210099, the issue affects multiple branches across QTS 5.2.x and QuTS hero 5.2.x, 5.3.x, and 6.0.x and is fixed in builds dated 2026-02-06 through 2026-05-20. No public exploit identified at time of analysis and the issue is not listed in CISA KEV.

Command Injection Qnap Qts Quts Hero Qnap Systems Inc
NVD VulDB
CVSS 4.0
8.6
EPSS
0.5%
CVE-2025-62851 Jun 10, 03:02 MEDIUM PATCH This Month

Path traversal in QNAP License Center (versions 1.9.0 through 1.9.55) permits a high-privileged attacker with an administrator account to read arbitrary files or system data outside the intended directory scope. The CVSS 4.0 vector (AV:N/PR:H) indicates network-reachable exploitation contingent on first obtaining administrative credentials. No public exploit code or active exploitation has been identified at time of analysis; a vendor-released patch is available in version 1.9.56.

Path Traversal License Center Qnap Systems Inc
NVD VulDB
CVSS 4.0
4.6
EPSS
0.0%
CVE-2025-62850 Jun 10, 02:34 MEDIUM This Month

NULL pointer dereference in QNAP QuTS hero NAS operating system allows a remote attacker who has already obtained or possesses an administrator account to trigger a denial-of-service condition, crashing affected services. Affected branches span QuTS hero h5.2.x, h5.3.x, and h6.0.x series, with vendor-released patches available as of early-to-mid 2026. No public exploit code or CISA KEV listing has been identified at time of analysis, and the mandatory prerequisite of high-privilege authentication substantially constrains real-world impact.

Denial Of Service Null Pointer Dereference Qnap Quts Hero Qnap Systems Inc
NVD VulDB
CVSS 4.0
5.1
EPSS
0.1%
CVE-2025-58468 Jun 10, 01:38 MEDIUM PATCH This Month

Cross-site request forgery in QNAP Notification Center allows remote unauthenticated attackers to forge state-changing requests on behalf of authenticated NAS users, potentially resulting in privilege escalation or session hijacking within the Notification Center context. Affected versions are all Notification Center 1.10.0 builds prior to 1.10.0.3291, confirmed by QNAP advisory QSA-26-13 and EUVD-2025-210096. Exploitation requires active victim interaction (CVSS 4.0 UI:A), integrity impact is rated low (VI:L), and no public exploit code or active exploitation has been identified at time of analysis.

CSRF Notification Center Qnap Systems Inc
NVD VulDB
CVSS 4.0
5.1
EPSS
0.0%
CVE-2025-59382 Jun 10, 01:38 LOW Monitor

External control of assumed-immutable web parameters in QNAP NAS software enables remote unauthenticated attackers to achieve low-integrity impact by manipulating parameters the application treats as unmodifiable. The vulnerability requires active user interaction to trigger, limiting opportunistic exploitation. QNAP has released a fix per advisory QSA-26-10; no public exploit code or CISA KEV listing has been identified at time of analysis.

Information Disclosure Qts Quts Hero Qutscloud Qnap Systems Inc
NVD VulDB
CVSS 4.0
1.2
EPSS
0.0%
CVE-2025-66276 Jun 10, 01:37 CRITICAL PATCH Act Now

High-severity information disclosure flaw in QNAP QTS NAS operating system versions 5.2.0 through 5.2.7.3256 build 20250913 allows remote unauthenticated attackers to obtain sensitive data over the network with low attack complexity, per CVSS v4.0 vector AV:N/AC:L/PR:N/UI:N rating 9.2. The vendor has released a fix, and notably QuTS hero is explicitly unaffected. No public exploit identified at time of analysis, and the issue is not currently listed in CISA KEV.

Information Disclosure Qts Quts Hero Qnap Systems Inc
NVD VulDB
CVSS 4.0
9.2
EPSS
0.0%
CVE-2025-62858 Jun 09, 06:17 MEDIUM PATCH This Month

Stack-based buffer overflow in QNAP QTS and QuTS hero NAS operating systems enables an authenticated administrator to corrupt stack memory or crash processes via a network-accessible attack path. Affected versions span QTS 5.2.x and multiple QuTS hero release trains (h5.2.x, h5.3.x, h6.0.x), with vendor-released patches dated February-May 2026. No public exploit code and no CISA KEV listing have been identified at time of analysis, and the mandatory high-privilege prerequisite substantially limits realistic attack surface.

Buffer Overflow Qnap Stack Overflow Qts Quts Hero +1
NVD VulDB
CVSS 4.0
5.1
EPSS
0.1%
CVE-2026-26236 Jun 09, 04:06 MEDIUM PATCH This Month

Unauthorized data access and action execution in QNAP QuMagie versions prior to 2.9.0 allows remote attackers to bypass authorization checks over the network without authentication. The CVSS 4.0 score of 8.7 reflects high confidentiality impact with low attack complexity and no privileges required, though no public exploit identified at time of analysis and KEV listing is absent.

Authentication Bypass Qumagie Qnap Systems Inc
NVD VulDB
CVSS 4.0
6.6
EPSS
0.1%
CVE-2025-59383 Mar 20, 16:22 LOW PATCH Monitor

A stack-based buffer overflow vulnerability exists in QNAP Media Streaming Add-On that allows remote attackers to corrupt memory or crash the affected process. All versions prior to 500.1.1 are vulnerable, and the attack requires no authentication or user interaction. While no CVSS score or EPSS data is currently available, the presence of a confirmed patch and the critical nature of buffer overflow vulnerabilities in media processing software suggests this warrants immediate patching.

Buffer Overflow Stack Overflow Media Streaming Add On Qnap Systems Inc
NVD VulDB
CVSS 4.0
2.7
EPSS
0.2%
CVE-2025-62843 Mar 20, 16:22 LOW PATCH Monitor

An improper restriction of communication channel to intended endpoints vulnerability (CWE-923) has been identified in QNAP QHora devices, allowing attackers with physical access to exploit insufficient endpoint validation and gain privileges intended for legitimate endpoints. The vulnerability affects QHora/QuRouter products prior to version 2.6.3.009. While no CVSS score or EPSS data is currently available and the vulnerability does not appear in active exploitation databases (KEV), the physical access requirement significantly constrains real-world exploitability, though the privilege escalation impact remains concerning for organizations with physical security controls.

Information Disclosure Qurouter Qnap Systems Inc
NVD VulDB
CVSS 4.0
0.9
EPSS
0.0%
CVE-2025-62844 Mar 20, 16:21 MEDIUM PATCH This Month

A weak authentication vulnerability exists in QNAP QHora/QuRouter devices that allows attackers with local network access to bypass authentication mechanisms and disclose sensitive information. The vulnerability affects QuRouter versions prior to 2.6.2.007, and exploitation requires network-level access but no special privileges. While no CVSS score or EPSS data is publicly available, the classification as CWE-1390 (Weak Authentication) and the emphasis on local network access indicates this is a network-adjacent threat with moderate real-world risk, particularly in environments where untrusted devices can connect to the local network.

Information Disclosure Qurouter Qnap Systems Inc
NVD VulDB
CVSS 4.0
4.0
EPSS
0.0%
CVE-2025-62845 Mar 20, 16:21 MEDIUM PATCH This Month

An improper neutralization of escape, meta, or control sequences vulnerability (CWE-150) affects QNAP QHora/QuRouter devices, allowing local attackers with administrator privileges to cause unexpected behavior through injection of unfiltered control sequences. The vulnerability has been patched in QuRouter version 2.6.3.009 and later. While no CVSS score, EPSS probability, or KEV/POC data are currently published, the requirement for local administrator access significantly limits exploitation scope in typical deployments.

Information Disclosure Qurouter Qnap Systems Inc
NVD VulDB
CVSS 4.0
5.6
EPSS
0.0%
CVE-2025-62846 Mar 20, 16:21 HIGH PATCH This Week

An SQL injection vulnerability exists in QNAP QuRouter that allows authenticated local administrators to execute unauthorized code or commands through SQL injection techniques. The vulnerability affects QuRouter versions prior to 2.6.2.007, and exploitation requires an attacker to first obtain legitimate administrator credentials on the affected device. While no CVSS score or EPSS data is currently published, the SQL injection classification (CWE-89) combined with code execution impact represents a critical risk for compromised administrator accounts.

SQLi Qurouter Qnap Systems Inc
NVD VulDB
CVSS 4.0
7.3
EPSS
0.0%
CVE-2026-22895 Mar 20, 16:21 MEDIUM PATCH This Month

A cross-site scripting (XSS) vulnerability exists in QuFTP Service that allows authenticated remote attackers with administrator credentials to bypass security mechanisms and read application data. The vulnerability affects multiple versions of QuFTP Service across different release branches (1.4.x, 1.5.x, and 1.6.x prior to specified patch versions). While no CVSS score, EPSS probability, or KEV status is currently available, the requirement for administrator-level access significantly constrains real-world exploitation risk.

XSS Quftp Service Qnap Systems Inc
NVD VulDB
CVSS 4.0
6.2
EPSS
0.1%
CVE-2026-22900 Mar 20, 16:21 MEDIUM PATCH This Month

QuNetSwitch contains hard-coded credentials that allow remote attackers to bypass authentication and gain unauthorized access to affected systems. This vulnerability affects QuNetSwitch versions prior to 2.0.5.0906, where credentials are embedded in the application code rather than properly managed through secure credential storage mechanisms. Remote attackers can exploit this weakness without requiring valid user credentials, leading to complete compromise of the network switch management interface.

Authentication Bypass Qunetswitch Qnap Systems Inc
NVD VulDB
CVSS 4.0
6.8
EPSS
0.2%
CVE-2026-22901 Mar 20, 16:21 MEDIUM PATCH This Month

Command injection in QuNetSwitch allows authenticated remote attackers to execute arbitrary commands on affected systems with high impact to confidentiality and integrity. The vulnerability requires valid user credentials to exploit but poses significant risk to systems running versions prior to 2.0.5.0906. No patch is currently available for this CVSS 6.3 medium-severity issue.

Command Injection Qunetswitch Qnap Systems Inc
NVD VulDB
CVSS 4.0
6.3
EPSS
1.0%
CVE-2026-22902 Mar 20, 16:21 MEDIUM PATCH This Month

Arbitrary command execution in QuNetSwitch can be achieved by local attackers with administrator privileges due to insufficient input validation in command processing. This vulnerability affects QuNetSwitch versions prior to 2.0.5.0906, allowing authenticated high-privilege users to bypass security controls and execute system commands. No patch is currently available for affected versions.

Command Injection Qunetswitch Qnap Systems Inc
NVD VulDB
CVSS 4.0
5.7
EPSS
0.1%
EPSS 1% CVSS 8.6
HIGH PATCH This Week

Authenticated command injection in QNAP QTS and QuTS hero NAS operating systems allows attackers with administrator credentials to execute arbitrary OS commands on the appliance. The flaw spans multiple QTS and QuTS hero release trains (5.2.x, 5.3.x, and 6.0.x) and has been patched by QNAP across all affected branches. No public exploit identified at time of analysis, and the vulnerability is not currently listed in CISA KEV, but the post-authentication code execution primitive is highly valuable for attackers who have already harvested admin credentials.

Command Injection Qnap Qts +2
NVD VulDB
EPSS 0% CVSS 8.7
HIGH PATCH This Week

Authorization bypass in QNAP QuMagie versions prior to 2.9.1 allows remote unauthenticated attackers to manipulate user-controlled keys (IDOR-class flaw) and gain unintended privileges on the photo management application. The QNAP-issued advisory QSA-26-35 confirms the issue and ships a fix in 2.9.1; no public exploit identified at time of analysis, and the flaw is not currently listed in CISA KEV.

Authentication Bypass Qumagie Qnap Systems Inc
NVD VulDB
EPSS 1% CVSS 8.1
HIGH PATCH This Week

Remote command execution in QuNetSwitch versions prior to 2.0.4.0415 allows unauthenticated attackers to execute arbitrary system commands over the network with no user interaction required. The vulnerability stems from improper input validation in command processing functions, enabling complete system compromise. No patch is currently available for affected versions.

Command Injection Qunetswitch Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 9.3
CRITICAL PATCH Act Now

QVR Pro contains a missing authentication vulnerability (CWE-306) that allows remote attackers to access critical functions without proper credential validation, potentially gaining unauthorized system access. All versions prior to QVR Pro 2.7.4.14 are affected. This authentication bypass vulnerability enables unauthenticated remote exploitation of a surveillance management platform, representing a direct threat to organizations relying on QVR Pro for video recording and system administration.

Authentication Bypass Qvr Pro Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 6.2
MEDIUM PATCH This Month

Authorization bypass in QNAP File Station 5 (versions 5.5.0 through 5.5.6.5243) allows a remote attacker with a valid low-privileged user account to circumvent intended access restrictions and reach files or operations they should not be able to access. The flaw was reported by QNAP itself with a CVSS 4.0 score of 8.6 reflecting high confidentiality and integrity impact, and there is no public exploit identified at time of analysis. Note that the vendor description text references 'File Station 6,' but the CPE, affected version list, and fix data all point to File Station 5, which appears to be a typo in the advisory.

Authentication Bypass File Station 5 Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 6.3
MEDIUM PATCH This Month

Stack-based buffer overflow in QNAP File Station 5 versions 5.5.0 through 5.5.6.5208 allows authenticated remote attackers to corrupt memory and crash processes on affected NAS deployments. CVSS 4.0 score of 8.7 reflects high impact across confidentiality, integrity, and availability, though exploitation requires valid user credentials (PR:L). No public exploit identified at time of analysis, and the CVE is not currently listed in CISA KEV.

Buffer Overflow Stack Overflow File Station 5 +1
NVD VulDB
EPSS 0% CVSS 6.6
MEDIUM PATCH This Month

Unauthorized data access and action execution in QNAP QuMagie versions prior to 2.9.0 allows remote attackers to bypass authorization checks and interact with resources they should not be permitted to reach. The flaw is classified as a missing authorization issue (CWE-862) and carries a CVSS 4.0 score of 8.7 due to its network-reachable, low-complexity nature with no privileges or user interaction required. No public exploit identified at time of analysis, but QNAP NAS appliances are historically high-value targets for opportunistic attackers.

Authentication Bypass Qumagie Qnap Systems Inc
NVD VulDB
EPSS 1% CVSS 6.1
MEDIUM PATCH This Month

Authenticated command injection in QNAP QTS and QuTS hero NAS operating systems allows an attacker who already holds an administrator account to execute arbitrary OS commands on the appliance. The flaw carries a CVSS 4.0 score of 8.6, but the PR:H requirement substantially narrows the attacker population; no public exploit identified at time of analysis and the issue is not listed in CISA KEV. QNAP has shipped fixed builds (QTS 5.2.9.3492 build 20260507 and QuTS hero h5.2.9.3499 build 20260514).

Command Injection Qnap Qts +2
NVD VulDB
EPSS 0% CVSS 1.2
LOW PATCH Monitor

Path traversal in QNAP QTS and QuTS hero NAS operating systems exposes arbitrary file contents to attackers who have already obtained administrator-level access. The root cause (CWE-22) indicates insufficient sanitization of file path inputs, allowing directory escape to reach files outside intended scope. No public exploit code has been identified at time of analysis, and CISA KEV lists no active exploitation - making this a targeted post-compromise risk rather than an opportunistic mass-exploitation scenario. Vendor-released patches address all affected branches as of May 2026.

Path Traversal Qnap Qts +2
NVD VulDB
EPSS 0% CVSS 1.2
LOW PATCH Monitor

NULL pointer dereference in QNAP QTS and QuTS hero NAS operating systems enables a remote, administrator-authenticated attacker to trigger a denial-of-service condition. Exploitation requires the attacker to first hold or acquire an administrator account on the target device, after which a crafted request can crash system services. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog at time of analysis.

Denial Of Service Null Pointer Dereference Qnap +3
NVD VulDB
EPSS 0% CVSS 1.3
LOW PATCH Monitor

Resource exhaustion in QNAP File Station 5 (versions 5.5.0 through 5.5.6.5242) allows a remote attacker holding a low-privilege user account to exhaust shared resources, denying availability to other users, processes, or applications on the same system. The vulnerability is classified as a Denial-of-Service risk with no impact on confidentiality or data integrity. No public exploit code or CISA KEV listing has been identified at time of analysis; QNAP has released a patched version and published a security advisory.

Denial Of Service File Station 5 Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 1.3
LOW PATCH Monitor

NULL pointer dereference in QNAP File Station 5 enables authenticated remote attackers to crash the service and cause a denial-of-service condition. Exploitation requires prior acquisition of a valid user account on the target QNAP NAS device, after which the attacker can trigger the dereference remotely over the network. No public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA KEV catalog.

Denial Of Service Null Pointer Dereference File Station 5 +1
NVD VulDB
EPSS 0% CVSS 6.9
MEDIUM PATCH This Month

NULL pointer dereference in QNAP QTS and QuTS hero NAS operating systems allows remote unauthenticated attackers to crash a network-facing service and cause a denial-of-service condition without any authentication or user interaction. Multiple active OS branches are affected - QTS 5.2.x and QuTS hero h5.2.x through h6.0.x - across a device population that is historically internet-exposed and frequently targeted. No public exploit has been identified and this vulnerability is not listed in CISA KEV, but the zero-authentication, network-accessible attack surface makes DoS attempts trivially repeatable against unpatched devices.

Denial Of Service Null Pointer Dereference Qnap +3
NVD VulDB
EPSS 0% CVSS 5.1
MEDIUM PATCH This Month

Integer overflow (CWE-190) in QNAP QTS and QuTS hero NAS operating systems allows a remote attacker who has already obtained an administrator account to further compromise system integrity and availability. Affected versions span QTS 5.2.x and QuTS hero h5.2.x through h6.0.x; QNAP released patched builds in February and May 2026. No public exploit code and no CISA KEV listing have been identified at time of analysis, and the mandatory prerequisite of administrator-level access materially constrains real-world exploitability.

Buffer Overflow Qnap Integer Overflow +3
NVD VulDB
EPSS 1% CVSS 8.6
HIGH PATCH This Week

Authenticated command injection in QNAP QTS and QuTS hero allows a remote attacker holding administrator credentials to execute arbitrary OS commands on the NAS appliance. The CVSS 4.0 base score of 8.6 reflects high impact across confidentiality, integrity, and availability, though exploitation requires high privileges (PR:H). No public exploit has been identified at time of analysis, and the issue is not listed in CISA KEV; QNAP has released fixed builds across affected QTS and QuTS hero branches.

Command Injection Qnap Qts +2
NVD VulDB
EPSS 1% CVSS 8.6
HIGH PATCH This Week

Authenticated command injection in QNAP QTS and QuTS hero NAS operating systems allows a remote attacker who has already obtained administrator credentials to execute arbitrary OS commands on the appliance. Reported by QNAP itself and tracked as EUVD-2025-210099, the issue affects multiple branches across QTS 5.2.x and QuTS hero 5.2.x, 5.3.x, and 6.0.x and is fixed in builds dated 2026-02-06 through 2026-05-20. No public exploit identified at time of analysis and the issue is not listed in CISA KEV.

Command Injection Qnap Qts +2
NVD VulDB
EPSS 0% CVSS 4.6
MEDIUM PATCH This Month

Path traversal in QNAP License Center (versions 1.9.0 through 1.9.55) permits a high-privileged attacker with an administrator account to read arbitrary files or system data outside the intended directory scope. The CVSS 4.0 vector (AV:N/PR:H) indicates network-reachable exploitation contingent on first obtaining administrative credentials. No public exploit code or active exploitation has been identified at time of analysis; a vendor-released patch is available in version 1.9.56.

Path Traversal License Center Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 5.1
MEDIUM This Month

NULL pointer dereference in QNAP QuTS hero NAS operating system allows a remote attacker who has already obtained or possesses an administrator account to trigger a denial-of-service condition, crashing affected services. Affected branches span QuTS hero h5.2.x, h5.3.x, and h6.0.x series, with vendor-released patches available as of early-to-mid 2026. No public exploit code or CISA KEV listing has been identified at time of analysis, and the mandatory prerequisite of high-privilege authentication substantially constrains real-world impact.

Denial Of Service Null Pointer Dereference Qnap +2
NVD VulDB
EPSS 0% CVSS 5.1
MEDIUM PATCH This Month

Cross-site request forgery in QNAP Notification Center allows remote unauthenticated attackers to forge state-changing requests on behalf of authenticated NAS users, potentially resulting in privilege escalation or session hijacking within the Notification Center context. Affected versions are all Notification Center 1.10.0 builds prior to 1.10.0.3291, confirmed by QNAP advisory QSA-26-13 and EUVD-2025-210096. Exploitation requires active victim interaction (CVSS 4.0 UI:A), integrity impact is rated low (VI:L), and no public exploit code or active exploitation has been identified at time of analysis.

CSRF Notification Center Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 1.2
LOW Monitor

External control of assumed-immutable web parameters in QNAP NAS software enables remote unauthenticated attackers to achieve low-integrity impact by manipulating parameters the application treats as unmodifiable. The vulnerability requires active user interaction to trigger, limiting opportunistic exploitation. QNAP has released a fix per advisory QSA-26-10; no public exploit code or CISA KEV listing has been identified at time of analysis.

Information Disclosure Qts Quts Hero +2
NVD VulDB
EPSS 0% CVSS 9.2
CRITICAL PATCH Act Now

High-severity information disclosure flaw in QNAP QTS NAS operating system versions 5.2.0 through 5.2.7.3256 build 20250913 allows remote unauthenticated attackers to obtain sensitive data over the network with low attack complexity, per CVSS v4.0 vector AV:N/AC:L/PR:N/UI:N rating 9.2. The vendor has released a fix, and notably QuTS hero is explicitly unaffected. No public exploit identified at time of analysis, and the issue is not currently listed in CISA KEV.

Information Disclosure Qts Quts Hero +1
NVD VulDB
EPSS 0% CVSS 5.1
MEDIUM PATCH This Month

Stack-based buffer overflow in QNAP QTS and QuTS hero NAS operating systems enables an authenticated administrator to corrupt stack memory or crash processes via a network-accessible attack path. Affected versions span QTS 5.2.x and multiple QuTS hero release trains (h5.2.x, h5.3.x, h6.0.x), with vendor-released patches dated February-May 2026. No public exploit code and no CISA KEV listing have been identified at time of analysis, and the mandatory high-privilege prerequisite substantially limits realistic attack surface.

Buffer Overflow Qnap Stack Overflow +3
NVD VulDB
EPSS 0% CVSS 6.6
MEDIUM PATCH This Month

Unauthorized data access and action execution in QNAP QuMagie versions prior to 2.9.0 allows remote attackers to bypass authorization checks over the network without authentication. The CVSS 4.0 score of 8.7 reflects high confidentiality impact with low attack complexity and no privileges required, though no public exploit identified at time of analysis and KEV listing is absent.

Authentication Bypass Qumagie Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 2.7
LOW PATCH Monitor

A stack-based buffer overflow vulnerability exists in QNAP Media Streaming Add-On that allows remote attackers to corrupt memory or crash the affected process. All versions prior to 500.1.1 are vulnerable, and the attack requires no authentication or user interaction. While no CVSS score or EPSS data is currently available, the presence of a confirmed patch and the critical nature of buffer overflow vulnerabilities in media processing software suggests this warrants immediate patching.

Buffer Overflow Stack Overflow Media Streaming Add On +1
NVD VulDB
EPSS 0% CVSS 0.9
LOW PATCH Monitor

An improper restriction of communication channel to intended endpoints vulnerability (CWE-923) has been identified in QNAP QHora devices, allowing attackers with physical access to exploit insufficient endpoint validation and gain privileges intended for legitimate endpoints. The vulnerability affects QHora/QuRouter products prior to version 2.6.3.009. While no CVSS score or EPSS data is currently available and the vulnerability does not appear in active exploitation databases (KEV), the physical access requirement significantly constrains real-world exploitability, though the privilege escalation impact remains concerning for organizations with physical security controls.

Information Disclosure Qurouter Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 4.0
MEDIUM PATCH This Month

A weak authentication vulnerability exists in QNAP QHora/QuRouter devices that allows attackers with local network access to bypass authentication mechanisms and disclose sensitive information. The vulnerability affects QuRouter versions prior to 2.6.2.007, and exploitation requires network-level access but no special privileges. While no CVSS score or EPSS data is publicly available, the classification as CWE-1390 (Weak Authentication) and the emphasis on local network access indicates this is a network-adjacent threat with moderate real-world risk, particularly in environments where untrusted devices can connect to the local network.

Information Disclosure Qurouter Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 5.6
MEDIUM PATCH This Month

An improper neutralization of escape, meta, or control sequences vulnerability (CWE-150) affects QNAP QHora/QuRouter devices, allowing local attackers with administrator privileges to cause unexpected behavior through injection of unfiltered control sequences. The vulnerability has been patched in QuRouter version 2.6.3.009 and later. While no CVSS score, EPSS probability, or KEV/POC data are currently published, the requirement for local administrator access significantly limits exploitation scope in typical deployments.

Information Disclosure Qurouter Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 7.3
HIGH PATCH This Week

An SQL injection vulnerability exists in QNAP QuRouter that allows authenticated local administrators to execute unauthorized code or commands through SQL injection techniques. The vulnerability affects QuRouter versions prior to 2.6.2.007, and exploitation requires an attacker to first obtain legitimate administrator credentials on the affected device. While no CVSS score or EPSS data is currently published, the SQL injection classification (CWE-89) combined with code execution impact represents a critical risk for compromised administrator accounts.

SQLi Qurouter Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 6.2
MEDIUM PATCH This Month

A cross-site scripting (XSS) vulnerability exists in QuFTP Service that allows authenticated remote attackers with administrator credentials to bypass security mechanisms and read application data. The vulnerability affects multiple versions of QuFTP Service across different release branches (1.4.x, 1.5.x, and 1.6.x prior to specified patch versions). While no CVSS score, EPSS probability, or KEV status is currently available, the requirement for administrator-level access significantly constrains real-world exploitation risk.

XSS Quftp Service Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 6.8
MEDIUM PATCH This Month

QuNetSwitch contains hard-coded credentials that allow remote attackers to bypass authentication and gain unauthorized access to affected systems. This vulnerability affects QuNetSwitch versions prior to 2.0.5.0906, where credentials are embedded in the application code rather than properly managed through secure credential storage mechanisms. Remote attackers can exploit this weakness without requiring valid user credentials, leading to complete compromise of the network switch management interface.

Authentication Bypass Qunetswitch Qnap Systems Inc
NVD VulDB
EPSS 1% CVSS 6.3
MEDIUM PATCH This Month

Command injection in QuNetSwitch allows authenticated remote attackers to execute arbitrary commands on affected systems with high impact to confidentiality and integrity. The vulnerability requires valid user credentials to exploit but poses significant risk to systems running versions prior to 2.0.5.0906. No patch is currently available for this CVSS 6.3 medium-severity issue.

Command Injection Qunetswitch Qnap Systems Inc
NVD VulDB
EPSS 0% CVSS 5.7
MEDIUM PATCH This Month

Arbitrary command execution in QuNetSwitch can be achieved by local attackers with administrator privileges due to insufficient input validation in command processing. This vulnerability affects QuNetSwitch versions prior to 2.0.5.0906, allowing authenticated high-privilege users to bypass security controls and execute system commands. No patch is currently available for affected versions.

Command Injection Qunetswitch Qnap Systems Inc
NVD VulDB

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