14
CVEs
0
Critical
4
High
0
KEV
0
PoC
0
Unpatched C/H
92.9%
Patch Rate
0.3%
Avg EPSS
Severity Breakdown
CRITICAL
0
HIGH
4
MEDIUM
6
LOW
4
Monthly CVE Trend
Affected Products (30)
Qts
204
Quts Hero
168
Qsync Central
61
File Station
50
Qutscloud
18
Photo Station
16
Video Station
11
Qumagie
10
Qvr
9
Qurouter
8
Q Center
7
Music Station
7
Hybrid Backup Sync
6
Notes Station 3
6
Helpdesk
5
License Center
5
Media Streaming Add On
5
Qulog Center
5
Multimedia Console
4
Qes
4
Download Station
3
Signage Station
3
Viostor Network Video Recorder
3
Netscaler Sdx Firmware
2
Qradar Security Information And Event Manager
2
Linux Enterprise Server
2
Workload Deployer
2
Enterprise Linux For Scientific Computing
2
Big Iq Security
2
Storwize V7000 Firmware
2
Top Risky CVEs
| CVE | Summary | Severity | CVSS | EPSS | Priority | Signals |
|---|---|---|---|---|---|---|
| CVE-2025-66273 | 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. | HIGH | 8.6 | 0.5% | 44 |
|
| CVE-2025-66279 | 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. | HIGH | 8.6 | 0.5% | 44 |
|
| CVE-2026-22893 | 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. | HIGH | 8.6 | 0.5% | 44 |
|
| CVE-2026-80975 | Stack memory corruption in the Linux kernel's qnap-mcu MFD driver allows a local low-privileged user on QNAP hardware to corrupt kernel stack memory, potentially enabling privilege escalation. The driver's qnap_mcu_exec() publishes an on-stack receive buffer to the serdev receive path, which runs asynchronously; when a command times out and the function returns, reply->data still points at the deallocated stack frame. A late MCU reply or unsolicited MCU message then overwrites whatever occupies that stack memory next, yielding C:H/I:H/A:H impact. No public exploit exists and EPSS is 0.20% (10th percentile), consistent with a kernel driver bug requiring physical or local QNAP hardware access. | HIGH | 7.8 | 0.2% | 39 |
|
| CVE-2025-66281 | 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. | MEDIUM | 6.9 | 0.2% | 35 |
|
| CVE-2026-41539 | Cross-site scripting in QNAP QTS and QuTS hero operating systems allows remote attackers to bypass security mechanisms and read application data when an authenticated user interacts with attacker-supplied content. The flaw carries a CVSS 4.0 score of 8.7 driven by network reachability, low attack complexity, no required privileges, and high impact across confidentiality, integrity, and availability of the NAS management surface. There is no public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV. | MEDIUM | 6.3 | 0.1% | 32 |
|
| CVE-2026-24719 | 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). | MEDIUM | 6.1 | 0.5% | 31 |
|
| CVE-2025-62850 | 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. | MEDIUM | 5.1 | 0.1% | 26 |
No patch
|
| CVE-2025-66280 | 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. | MEDIUM | 5.1 | 0.1% | 26 |
|
| CVE-2025-62858 | 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. | MEDIUM | 5.1 | 0.1% | 26 |
|
| CVE-2026-26240 | Stack-based buffer overflow in QNAP File Station 5 allows unauthenticated remote attackers to corrupt process memory or crash the file management service when a victim user passively interacts with a crafted input. Affected versions are all File Station 5 releases prior to 5.5.6.5243, running on QNAP NAS devices accessible over the network. No public exploit code has been identified and this CVE is not listed in the CISA KEV catalog; QNAP has confirmed and released a fix in version 5.5.6.5243 via advisory QSA-26-32. | LOW | 1.3 | 0.1% | 7 |
|
| CVE-2026-26241 | Stack-based buffer overflow in QNAP File Station 5 enables remote unauthenticated attackers to corrupt memory or destabilize processes through a network-accessible attack path requiring only passive user interaction. Affected versions are all releases prior to 5.5.6.5243; QNAP's own security team (security@qnapsecurity.com.tw) discovered and disclosed the issue via advisory QSA-26-27. No public exploit code exists and the vulnerability is not listed in CISA KEV; however, the unauthenticated network attack vector lowers the bar for opportunistic targeting of QNAP NAS deployments. | LOW | 1.3 | 0.1% | 7 |
|
| CVE-2026-24717 | 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. | LOW | 1.2 | 0.2% | 6 |
|
| CVE-2026-24716 | 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. | LOW | 1.2 | 0.1% | 6 |
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