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Medium severityNVD Advisory· Published Jun 10, 2026· Updated Jun 10, 2026

CVE-2025-66281

CVE-2025-66281

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

Affected products

2
  • Qnap/Qtsllm-fuzzy
    Range: before 5.2.9.3410 build 20260214
  • Qnap/QuTS herollm-fuzzy
    Range: before h5.2.9.3410 build 20260214, before h5.3.4.3500 build 20260520, before h6.0.0.3397 build 20260206

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

1

News mentions

2