NULL Pointer Dereference in Qsync Central by QNAP
CVE-2025-30266

0.6LOW

Key Information:

Vendor

QNAP
Status
Qsync Central
Vendor
CVE Published:
11 February 2026

What is CVE-2025-30266?

A NULL pointer dereference vulnerability has been identified in Qsync Central, allowing remote attackers with valid user accounts to exploit this flaw, potentially leading to denial-of-service (DoS) conditions. The issue affects versions prior to 5.0.0.4, which has been remedied in subsequent updates. Users are advised to update their systems to avoid potential exploitation.

Affected Version(s)

Qsync Central 5.0.x.x < 5.0.0.4 ( 2026/01/20 )

References

https://www.qnap.com/en/security-advisory/qsa-26-02

CVSS V4

Score:
0.6
Severity:
LOW
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

coral
.