CVE-2025-48722
Analyzed Analyzed - Analysis Complete
NULL Pointer Dereference in Qsync Central Enables Remote DoS

Publication date: 2026-02-11

Last updated on: 2026-02-11

Assigner: QNAP Systems, Inc.

Description
A NULL pointer dereference vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.4 ( 2026/01/20 ) and later
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Meta Information
Published
2026-02-11
Last Modified
2026-02-11
Generated
2026-06-16
AI Q&A
2026-02-11
EPSS Evaluated
2026-06-14
NVD
CVE-2025-48722
EUVD
EUVD-2025-207451
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
qnap qsync_central From 5.0.0.0 (inc) to 5.0.0.4 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.
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Executive Summary

This vulnerability is a NULL pointer dereference issue affecting Qsync Central. It occurs when a remote attacker who has gained access to a user account exploits the flaw to cause the software to crash or become unavailable.

Essentially, the attacker can trigger a denial-of-service (DoS) attack by exploiting this vulnerability.

Impact Analysis

If exploited, this vulnerability allows an attacker with a user account to launch a denial-of-service (DoS) attack against Qsync Central, causing the service to crash or become unavailable.

This can disrupt normal operations and potentially impact availability of services relying on Qsync Central.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should upgrade Qsync Central to version 5.0.0.4 or later, where the issue has been fixed.

Additionally, since exploitation requires a remote attacker to have a user account, reviewing and tightening user account access controls may help reduce risk.

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