Buffer Overflow Vulnerability in QNAP Operating Systems
CVE-2025-53593

1.2LOW

Key Information:

Vendor

QNAP
Status
Qts
Quts Hero
Vendor
CVE Published:
2 January 2026

What is CVE-2025-53593?

A buffer overflow vulnerability has been identified in various versions of QNAP operating systems. When exploited by an attacker with administrative access, this vulnerability enables the modification of memory and the potential to crash critical processes. It is crucial for users to upgrade to the following fixed versions: QTS 5.2.7.3256 build 20250913 or later, and QuTS hero h5.2.7.3256 build 20250913 or later, to mitigate the risk.

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Deploy the Patch

Affected Version(s)

QTS 5.2.x < 5.2.7.3256 build 20250913

QuTS hero h5.2.x

QuTS hero h5.3.x

References

https://www.qnap.com/en/security-advisory/qsa-25-50

CVSS V4

Score:
1.2
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

coral
JSON
.