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TI-2025-21581 Aliases CVE-2025-30262GHSA-p4q8-m4xq-5x45

NULL pointer dereference in QNAP Qsync Central

Priority LOW 24CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-476.

Summary

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 5.0.0.0 ( 2025/06/13 ) and later

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0046 40th percentileScored 2026-11-07
Fix Fixed Qsync Central (QNAP Systems Inc.): 5.0.0.0 ( 2025/06/13 )

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
QNAPQsync Central5.0.x.x to before 5.0.0.0 ( 2025/06/13 )5.0.0.0 ( 2025/06/13 )Patch availableCNA
  • Qsync Central VendorQNAP Affected 5.0.x.x to before 5.0.0.0 ( 2025/06/13 ) Fixed in 5.0.0.0 ( 2025/06/13 ) Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:qnap:qsync_central:5.0.0.0:*:*:*:*:*:*:*5.0.0.0VulnerableQNAP
  • cpe:2.3:a:qnap:qsync_central:5.0.0.0:*:*:*:*:*:*:* Versions 5.0.0.0 Vulnerable ·QNAP

Remediation

  • Fix · CNA Qsync Central (QNAP Systems Inc.) Fixed in 5.0.0.0 ( 2025/06/13 )

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    QNAP Systems Qsync Central 5.0.0.0 ( 2025/06/13 )

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2025-21580 Resource allocation without limits in QNAP Qsync CentralPriority LOW 32
    • TI-2025-21582 NULL pointer dereference in QNAP Qsync CentralPriority LOW 24
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-30262
  2. 2026-10-03 Alias added: GHSA-p4q8-m4xq-5x45

References

Advisory 1

  • TI-2025-33996 SQL injection in QNAP Qsync Central CVSS 4.0HIGH 8.6
  • TI-2025-33532 SQL injection in QNAP Qsync Central CVSS 4.0HIGH 8.6
  • TI-2025-21280 SQL injection in QNAP Qsync Central CVSS 4.0HIGH 8.7
  • TI-2023-25732 Incorrect permission assignment in QNAP Qsync Central CVSS 3.1HIGH 8.1
  • TI-2025-21597 Improper certificate validation in QNAP Qsync Central CVSS 4.0HIGH 8.3
  • TI-2025-21596 Improper certificate validation in QNAP Qsync Central CVSS 4.0HIGH 8.3
See all 61 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences