Buffer Overflow Vulnerability in QNAP Operating System
CVE-2025-62858

5.1MEDIUM

Key Information:

Vendor

QNAP
Status
Qts
Quts Hero
Vendor
CVE Published:
9 June 2026

What is CVE-2025-62858?

A buffer overflow has been identified in QNAP operating systems that could allow a remote attacker with administrator privileges to exploit the vulnerability. This exploitation may lead to unauthorized memory modifications or process crashes, potentially disrupting system functionality. It is essential for users to update their systems to the provided patched versions to mitigate this risk effectively.

Affected Version(s)

QTS 5.2.0 < 5.2.9.3410 build 20260214

QuTS hero h5.2.0

QuTS hero h5.3.0

References

https://www.qnap.com/en/security-advisory/qsa-26-10

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
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
.