CVE-2025-53591
Medium · 6.5CVSS
6.5
EPSS
0.3%
Published
Jan 2, 2026
CISA due date
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The record
A use of externally-controlled format string vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to obtain secret data or modify memory. We have already fixed the vulnerability in the following versions: QTS 5.2.7.3256 build 20250913 and later QuTS hero h5.2.7.3256 build 20250913 and later QuTS hero h5.3.1.3250 build 20250912 and later
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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