PT-2026-1072 · Qnap · Qnap Quts Hero H5.3.1+2

Coral · Published 2026-01-02 · Updated 2026-01-02 · CVE-2025-52426

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 QTS versions prior to 5.2.7.3256 build 20250913 QNAP QuTS hero h5.2.7 versions prior to 5.2.7.3256 build 20250913 QNAP QuTS hero h5.3.1 versions prior to 5.3.1.3250 build 20250912

Description A NULL pointer dereference issue exists in QNAP operating systems. Successful exploitation of this issue by a remote attacker who has obtained administrator privileges can lead to a denial-of-service (DoS) condition.

Recommendations Update QTS to version 5.2.7.3256 build 20250913 or later. Update QuTS hero h5.2.7 to version 5.2.7.3256 build 20250913 or later. Update QuTS hero h5.3.1 to version 5.3.1.3250 build 20250912 or later.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2025-52426

Affected Products

Qnap Qts

Qnap Quts Hero H5.2.7

Qnap Quts Hero H5.3.1

References · 6

• https://qnap.com/en/security-advisory/qsa-25-50 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-52426 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-52426 · Security Note
• https://t.me/CVEtracker/41235 · Telegram Post
• https://twitter.com/CVEnew/status/2007118441183097124 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2007155075454566699 · Twitter Post