PT-2026-1078 · Qnap · Quts Hero+1

Coral · Published 2026-01-02 · Updated 2026-01-02 · CVE-2025-53405

Positive Technologies (AI Summary)

CVSS v3.1

4.9

Medium

Base vector

AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions QNAP versions prior to QTS 5.2.7.3256 build 20250913 QNAP versions prior to QuTS hero h5.2.7.3256 build 20250913 QNAP versions prior to QuTS hero h5.3.1.3250 build 20250912

Description A NULL pointer dereference issue exists in QNAP operating systems. A remote attacker gaining administrator access can exploit this to cause a denial-of-service (DoS) condition. A NULL pointer dereference occurs when a program attempts to access a memory location that has not been assigned a valid value, leading to unpredictable behavior and potentially a crash.

Recommendations Update QTS to version 5.2.7.3256 build 20250913 or later. Update QuTS hero to version h5.2.7.3256 build 20250913 or later. Update QuTS hero to version h5.3.1.3250 build 20250912 or later.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2025-53405

Affected Products

Qts

Quts Hero

References · 6

• https://qnap.com/en/security-advisory/qsa-25-50 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-53405 · Security Note
• https://osv.dev/vulnerability/CVE-2025-53405 · Vendor Advisory
• https://twitter.com/CVEnew/status/2007118435348869626 · Twitter Post
• https://t.me/CVEtracker/41241 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2007134597390143869 · Twitter Post