SB2026021231 - Multiple vulnerabilities in QNAP QTS and QuTS hero 

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Main Vulnerability Database SB2026021231

SB2026021231 - Multiple vulnerabilities in QNAP QTS and QuTS hero

Published: February 12, 2026

Security Bulletin ID SB2026021231
Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 33% Low 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Use of Uninitialized Variable (CVE-ID: CVE-2025-58466)

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to use of uninitialized variable. A remote administrator can cause a denial of service condition on the target system.


2) NULL pointer dereference (CVE-ID: CVE-2025-47205)

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error. A remote administrator can pass specially crafted data to the application and perform a denial of service (DoS) attack.


3) Link following (CVE-ID: CVE-2025-66277)

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to an insecure link following issue. A remote attacker can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.


Remediation

Install update from vendor's website.

References