A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to launch a denial-of-service (DoS) attack.
We have already fixed the vulnerability in the following versions:
QTS 5.2.9.3410 build 20260214 and later
QuTS hero h5.2.9.3410 build 20260214 and later
QuTS hero h5.3.4.3500 build 20260520 and later
QuTS hero h6.0.0.3397 build 20260206 and later
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://www.qnap.com/en/security-advisory/qsa-26-10 |
|
History
Mon, 15 Jun 2026 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Qnap
Qnap qts Qnap quts Hero |
|
| CPEs | cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:* cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:* |
|
| Vendors & Products |
Qnap
Qnap qts Qnap quts Hero |
|
| Metrics |
cvssV3_1
|
Wed, 10 Jun 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 10 Jun 2026 05:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Qnap Systems Inc.
Qnap Systems Inc. qts Qnap Systems Inc. quts Hero |
|
| Vendors & Products |
Qnap Systems Inc.
Qnap Systems Inc. qts Qnap Systems Inc. quts Hero |
Wed, 10 Jun 2026 03:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following versions: QTS 5.2.9.3410 build 20260214 and later QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3397 build 20260206 and later | |
| Title | QTS, QuTS hero | |
| Weaknesses | CWE-476 | |
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: qnap
Published: 2026-06-10T03:06:06.429Z
Updated: 2026-06-10T15:50:06.023Z
Reserved: 2025-11-26T09:25:37.833Z
Link: CVE-2025-66281
Updated: 2026-06-10T15:50:00.618Z
Status : Analyzed
Published: 2026-06-10T04:17:14.383
Modified: 2026-06-15T18:32:30.810
Link: CVE-2025-66281
No data.