PT-2026-1082 · Qnap · Quts Hero+1

Coral · Published 2026-01-02 · Updated 2026-01-02 · CVE-2025-53591

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 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 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. A format string vulnerability occurs when user-supplied data is used as the format string in a format function, potentially allowing an attacker to read from or write to arbitrary memory locations.

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

RCE

Use of Externally-Controlled Format String

Weakness Enumeration

CWE-134

Related Identifiers

CVE-2025-53591

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-2025-53591 · Security Note
• https://osv.dev/vulnerability/CVE-2025-53591 · Vendor Advisory
• https://twitter.com/CVEnew/status/2007118431657861573 · Twitter Post
• https://t.me/CVEtracker/41245 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2007142276108095760 · Twitter Post