SecuriTricks - CVE-2025-53589

Description

A NULL pointer dereference 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 launch a denial-of-service (DoS) attack. 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

Product(s) Impacted

Vendor	Product	Versions
Qnap	Qts Qubs Hero	5.2.7.3256 h5.2.7.3256, h5.3.1.3250

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-476

NULL Pointer Dereference

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
o	qnap	qts	5.2.7.3256	/	/	/	/	/	/	/
o	qnap	qubs_hero	h5.2.7.3256	/	/	/	/	/	/	/
o	qnap	qubs_hero	h5.3.1.3250	/	/	/	/	/	/	/

References

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

CVSS Score

1.2 / 10

CVSS Data - 4.0

Attack Vector: NETWORK
Attack Complexity: LOW
Attack Requirements: NONE
Privileges Required: HIGH
User Interaction: NONE
Scope:
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: LOW
Exploit Maturity: UNREPORTED

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

View Vector String

Timeline

Published: Jan. 2, 2026, 3:16 p.m.
Last Modified: Jan. 2, 2026, 4:45 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

security@qnapsecurity.com.tw

CVE-2025-53589