PT-2026-1085 · Qnap · Qnap+1

Coral · Published 2026-01-02 · Updated 2026-01-02 · CVE-2025-53596

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 5.2.7.3256 build 20250913 QuTS hero versions prior to 5.2.7.3256 build 20250913 QuTS hero versions prior to 5.3.1.3250 build 20250912

Description A NULL pointer dereference issue exists in QNAP operating systems. Successful exploitation by a remote attacker with administrator privileges could lead to a denial-of-service (DoS) attack. A NULL pointer dereference occurs when a program attempts to access a memory location that has not been assigned a valid value, potentially causing the program to crash or behave unpredictably.

Recommendations Update QTS to version 5.2.7.3256 build 20250913 or later. Update QuTS hero to version 5.2.7.3256 build 20250913 or later. Update QuTS hero to version 5.3.1.3250 build 20250912 or later.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2025-53596

Affected Products

Qnap

Quts Hero

References · 6

• https://qnap.com/en/security-advisory/qsa-25-50 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-53596 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-53596 · Security Note
• https://t.me/CVEtracker/41248 · Telegram Post
• https://twitter.com/CVEnew/status/2007118428877037699 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2007132037254164813 · Twitter Post