SecuriTricks - CVE-2025-66274

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 version: QuTS hero h5.3.2.3354 build 20251225 and later

Product(s) Impacted

Vendor	Product	Versions
Qnap	Quts Hero	h5.3.0.3115, h5.3.0.3145, h5.3.0.3192, h5.3.1.3250, h5.3.1.3292

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	quts_hero	h5.3.0.3115	build_20250430	/	/	/	/	/	/
o	qnap	quts_hero	h5.3.0.3145	build_20250530	/	/	/	/	/	/
o	qnap	quts_hero	h5.3.0.3192	build_20250716	/	/	/	/	/	/
o	qnap	quts_hero	h5.3.1.3250	build_20250912	/	/	/	/	/	/
o	qnap	quts_hero	h5.3.1.3292	build_20251024	/	/	/	/	/	/

References

https://www.qnap.com/en/security-advisory/qsa-26-08

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: LOW
Availability Impact: LOW
Exploit Maturity: UNREPORTED

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/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: Feb. 11, 2026, 1:15 p.m.
Last Modified: Feb. 12, 2026, 5:08 p.m.

Status : Analyzed

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

More info

Source

[email protected]

CVE-2025-66274