Buffer Overflow Vulnerability in QNAP Operating Systems
CVE-2025-30265

2.3LOW

Key Information:

Vendor

QNAP
Status
Qts
Quts Hero
Vendor
CVE Published:
29 August 2025

What is CVE-2025-30265?

A buffer overflow vulnerability has been identified in various versions of QNAP operating systems. This flaw can be exploited by a remote attacker who has gained access to a user account, allowing them to manipulate memory, potentially causing degradation of service or crashing critical processes. Users are encouraged to upgrade to QTS 5.2.5.3145 or later and QuTS hero h5.2.5.3138 or later to mitigate this issue.

Affected Version(s)

QTS 5.2.x < 5.2.5.3145 build 20250526

QuTS hero h5.2.x

References

https://www.qnap.com/en/security-advisory/qsa-25-21

CVSS V4

Score:
2.3
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

Searat and izut
.
CVE-2025-30265 : Buffer Overflow Vulnerability in QNAP Operating Systems