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MEDIUM · 6.5

CVE-2025-53591

A use of externally-controlled format string vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploi...

Vulnerability Description

A use of externally-controlled format string vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to obtain secret data or modify memory. We have already fixed the vulnerability in the following versions: QTS 5.2.7.3256 build 20250913 and later QuTS hero h5.2.7.3256 build 20250913 and later QuTS hero h5.3.1.3250 build 20250912 and later

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
QnapQuts Heroh5.2.0.2737
QnapQts5.2.0.2737

Related Weaknesses (CWE)

CWE-134

References

FAQ

What is CVE-2025-53591?

CVE-2025-53591 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A use of externally-controlled format string vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploi...

How severe is CVE-2025-53591?

CVE-2025-53591 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-53591?

Check the references section above for vendor advisories and patch information. Affected products include: Qnap Quts Hero, Qnap Qts.