QNAP NAS Elevation of Privilege Vulnerability

Release Date: 30 Jan 2026

RISK: Medium Risk

TYPE: Servers - Other Servers

A vulnerability was identified in QNAP NAS. A remote attacker can exploit this vulnerability to trigger elevation of privilege on the targeted system.

---

Impact

• Elevation of Privilege

---

System / Technologies affected

• QTS 4.3.x

---

Solutions

Before installation of the software, please visit the vendor web-site for more details.

 

Apply fixes issued by the vendor:

• https://www.qnap.com/en/security-advisory/qsa-25-56

---

Vulnerability Identifier

• CVE-2025-66276

---

Source

• QNAP

---

Related Link

• https://www.qnap.com/en/security-advisory/qsa-25-56