PT-2025-40586 · Qnap · Qnap Qts+1

Coral · Published 2025-10-03 · Updated 2025-10-03 · CVE-2025-53406

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions QNAP QTS versions prior to 5.2.6.3195 build 20250715 QNAP QuTS hero versions prior to 5.2.6.3195 build 20250715

Description A use of externally-controlled format string vulnerability exists in QNAP operating systems. If an attacker obtains an administrator account, they may be able to obtain secret data or modify memory.

Recommendations Update QTS to version 5.2.6.3195 build 20250715 or later. Update QuTS hero to version 5.2.6.3195 build 20250715 or later.

Fix

Use of Externally-Controlled Format String

Weakness Enumeration

CWE-134

Related Identifiers

CVE-2025-53406

Affected Products

Qnap Qts

Qnap Quts Hero

References · 6

• https://osv.dev/vulnerability/CVE-2025-53406 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-53406 · Security Note
• https://qnap.com/en/security-advisory/qsa-25-36 · Vendor Advisory
• https://twitter.com/CVEnew/status/1974184330260848760 · Twitter Post
• https://t.me/CVEtracker/34033 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1974203261935636949 · Twitter Post