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.

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Deploy the Patch

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
JSON
.